11537857828 has 24 divisors (see below), whose sum is σ = 23334998400. Its totient is φ = 4889235648.

The previous prime is 11537857819. The next prime is 11537857861. The reversal of 11537857828 is 82875873511.

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, 2312488 + ... + 2317471.

It is an arithmetic number, because the mean of its divisors is an integer number (972291600).

Almost surely, 2^11537857828 is an apocalyptic number.

It is an amenable number.

11537857828 is an abundant number, since it is smaller than the sum of its proper divisors (11797140572).

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

11537857828 is a wasteful number, since it uses less digits than its factorization.

11537857828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4630059 (or 4630057 counting only the distinct ones).

The product of its digits is 3763200, while the sum is 55.

The spelling of 11537857828 in words is "eleven billion, five hundred thirty-seven million, eight hundred fifty-seven thousand, eight hundred twenty-eight".