11557456440 has 32 divisors (see below), whose sum is σ = 34672369680. Its totient is φ = 3081988352.

The previous prime is 11557456411. The next prime is 11557456459. The reversal of 11557456440 is 4465475511.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 11557456392 and 11557456401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48155949 + ... + 48156188.

Almost surely, 2^11557456440 is an apocalyptic number.

11557456440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11557456440 is an abundant number, since it is smaller than the sum of its proper divisors (23114913240).

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

11557456440 is a wasteful number, since it uses less digits than its factorization.

11557456440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96312151 (or 96312147 counting only the distinct ones).

The product of its (nonzero) digits is 336000, while the sum is 42.

The spelling of 11557456440 in words is "eleven billion, five hundred fifty-seven million, four hundred fifty-six thousand, four hundred forty".