11537638554 has 16 divisors (see below), whose sum is σ = 24850298592. Its totient is φ = 3550042608.

The previous prime is 11537638531. The next prime is 11537638573. The reversal of 11537638554 is 45583673511.

It is a Curzon 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, 73959144 + ... + 73959299.

It is an arithmetic number, because the mean of its divisors is an integer number (1553143662).

Almost surely, 2^11537638554 is an apocalyptic number.

11537638554 is an abundant number, since it is smaller than the sum of its proper divisors (13312660038).

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

11537638554 is a wasteful number, since it uses less digits than its factorization.

11537638554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147918461.

The product of its digits is 1512000, while the sum is 48.

The spelling of 11537638554 in words is "eleven billion, five hundred thirty-seven million, six hundred thirty-eight thousand, five hundred fifty-four".