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18372051117080 = 23517113239094887
BaseRepresentation
bin1000010110101100100111…
…00101001010010000011000
32102001100110211102122222122
410023112103211022100120
54402001430041221310
6103024000451440412
73604223360600063
oct413262345122030
972040424378878
1018372051117080
1159435a7996201
1220887628b6108
13a33627c2996b
144772d7ac98da
1521cd74c86555
hex10b59394a418

18372051117080 has 64 divisors (see below), whose sum is σ = 44156043915840. Its totient is φ = 6855328571392.

The previous prime is 18372051117047. The next prime is 18372051117139. The reversal of 18372051117080 is 8071115027381.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119470604 + ... + 119624283.

It is an arithmetic number, because the mean of its divisors is an integer number (689938186185).

Almost surely, 218372051117080 is an apocalyptic number.

18372051117080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18372051117080 is an abundant number, since it is smaller than the sum of its proper divisors (25783992798760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18372051117080 is a wasteful number, since it uses less digits than its factorization.

18372051117080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239095028 (or 239095024 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 44.

The spelling of 18372051117080 in words is "eighteen trillion, three hundred seventy-two billion, fifty-one million, one hundred seventeen thousand, eighty".

Divisors: 1 2 4 5 8 10 17 20 34 40 68 85 113 136 170 226 340 452 565 680 904 1130 1921 2260 3842 4520 7684 9605 15368 19210 38420 76840 239094887 478189774 956379548 1195474435 1912759096 2390948870 4064613079 4781897740 8129226158 9563795480 16258452316 20323065395 27017722231 32516904632 40646130790 54035444462 81292261580 108070888924 135088611155 162584523160 216141777848 270177222310 459301277927 540354444620 918602555854 1080708889240 1837205111708 2296506389635 3674410223416 4593012779270 9186025558540 18372051117080