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11807018620 = 2251394247129
BaseRepresentation
bin10101111111100000…
…01100111001111100
31010110211222200122221
422333300030321330
5143140044043440
65231333215124
7565406000545
oct127760147174
933424880587
1011807018620
115009832931
1223561914a4
131162197067
148001454cc
15491850d4a
hex2bfc0ce7c

11807018620 has 24 divisors (see below), whose sum is σ = 24973124400. Its totient is φ = 4688829312.

The previous prime is 11807018609. The next prime is 11807018623. The reversal of 11807018620 is 2681070811.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11807018623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2120785 + ... + 2126344.

It is an arithmetic number, because the mean of its divisors is an integer number (1040546850).

Almost surely, 211807018620 is an apocalyptic number.

11807018620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11807018620 is an abundant number, since it is smaller than the sum of its proper divisors (13166105780).

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

11807018620 is a wasteful number, since it uses less digits than its factorization.

11807018620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4247277 (or 4247275 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 34.

The spelling of 11807018620 in words is "eleven billion, eight hundred seven million, eighteen thousand, six hundred twenty".

Divisors: 1 2 4 5 10 20 139 278 556 695 1390 2780 4247129 8494258 16988516 21235645 42471290 84942580 590350931 1180701862 2361403724 2951754655 5903509310 11807018620