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16387526680 = 23572231133217
BaseRepresentation
bin11110100001100010…
…11101000000011000
31120022002000121110121
433100301131000120
5232030201323210
611310041323024
71120045451500
oct172061350030
946262017417
1016387526680
116a4a371388
123214196474
13171214b265
14b1660aa00
1565da436da
hex3d0c5d018

16387526680 has 192 divisors, whose sum is σ = 45166818240. Its totient is φ = 5325078528.

The previous prime is 16387526677. The next prime is 16387526689. The reversal of 16387526680 is 8662578361.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16387526689) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5092432 + ... + 5095648.

It is an arithmetic number, because the mean of its divisors is an integer number (235243845).

Almost surely, 216387526680 is an apocalyptic number.

16387526680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16387526680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22583409120).

16387526680 is an abundant number, since it is smaller than the sum of its proper divisors (28779291560).

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

16387526680 is a wasteful number, since it uses less digits than its factorization.

16387526680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3378 (or 3367 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 52.

The spelling of 16387526680 in words is "sixteen billion, three hundred eighty-seven million, five hundred twenty-six thousand, six hundred eighty".