11620515312 has 100 divisors (see below), whose sum is σ = 38437907376. Its totient is φ = 3320144640.

The previous prime is 11620515299. The next prime is 11620515337. The reversal of 11620515312 is 21351502611.

11620515312 is a `hidden beast` number, since 1 + 1 + 620 + 5 + 1 + 5 + 31 + 2 = 666.

It is a super-2 number, since 2×11620515312² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 631389 + ... + 649532.

Almost surely, 2^11620515312 is an apocalyptic number.

11620515312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11620515312 is an abundant number, since it is smaller than the sum of its proper divisors (26817392064).

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

11620515312 is a wasteful number, since it uses less digits than its factorization.

11620515312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1280948 (or 1280933 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 27.

The spelling of 11620515312 in words is "eleven billion, six hundred twenty million, five hundred fifteen thousand, three hundred twelve".