11537638572 has 48 divisors (see below), whose sum is σ = 27047526912. Its totient is φ = 3827859840.

The previous prime is 11537638531. The next prime is 11537638573. The reversal of 11537638572 is 27583673511.

It is not an unprimeable number, because it can be changed into a prime (11537638573) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4608273 + ... + 4610775.

It is an arithmetic number, because the mean of its divisors is an integer number (563490144).

Almost surely, 2^11537638572 is an apocalyptic number.

11537638572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11537638572 is an abundant number, since it is smaller than the sum of its proper divisors (15509888340).

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

11537638572 is a wasteful number, since it uses less digits than its factorization.

11537638572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4158 (or 4156 counting only the distinct ones).

The product of its digits is 1058400, while the sum is 48.

The spelling of 11537638572 in words is "eleven billion, five hundred thirty-seven million, six hundred thirty-eight thousand, five hundred seventy-two".