11515369956 has 24 divisors (see below), whose sum is σ = 26898846240. Its totient is φ = 3834220992.

The previous prime is 11515369949. The next prime is 11515369961. The reversal of 11515369956 is 65996351511.

It is a junction number, because it is equal to n+sod(n) for n = 11515369899 and 11515369908.

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 7 ways as a sum of consecutive naturals, for example, 518121 + ... + 539888.

It is an arithmetic number, because the mean of its divisors is an integer number (1120785260).

Almost surely, 2^11515369956 is an apocalyptic number.

It is an amenable number.

11515369956 is an abundant number, since it is smaller than the sum of its proper divisors (15383476284).

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

11515369956 is a wasteful number, since it uses less digits than its factorization.

11515369956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1058923 (or 1058921 counting only the distinct ones).

The product of its digits is 1093500, while the sum is 51.

The spelling of 11515369956 in words is "eleven billion, five hundred fifteen million, three hundred sixty-nine thousand, nine hundred fifty-six".