11521076657272 has 64 divisors (see below), whose sum is σ = 26608595267520. Its totient is φ = 4554103661568.

The previous prime is 11521076657263. The next prime is 11521076657281. The reversal of 11521076657272 is 27275667012511.

It is an interprime number because it is at equal distance from previous prime (11521076657263) and next prime (11521076657281).

It is a super-2 number, since 2×11521076657272² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (52).

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, 5496253 + ... + 7297324.

It is an arithmetic number, because the mean of its divisors is an integer number (415759301055).

Almost surely, 2^{11521076657272} is an apocalyptic number.

It is an amenable number.

11521076657272 is an abundant number, since it is smaller than the sum of its proper divisors (15087518610248).

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

11521076657272 is a wasteful number, since it uses less digits than its factorization.

11521076657272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12794840 (or 12794836 counting only the distinct ones).

The product of its (nonzero) digits is 2469600, while the sum is 52.

The spelling of 11521076657272 in words is "eleven trillion, five hundred twenty-one billion, seventy-six million, six hundred fifty-seven thousand, two hundred seventy-two".