11172057638 has 32 divisors (see below), whose sum is σ = 19571328000. Its totient is φ = 4683340224.

The previous prime is 11172057613. The next prime is 11172057679. The reversal of 11172057638 is 83675027111.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 11172057595 and 11172057604.

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, 1377098 + ... + 1385186.

It is an arithmetic number, because the mean of its divisors is an integer number (611604000).

Almost surely, 2^11172057638 is an apocalyptic number.

11172057638 is a deficient number, since it is larger than the sum of its proper divisors (8399270362).

11172057638 is a wasteful number, since it uses less digits than its factorization.

11172057638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10244.

The product of its (nonzero) digits is 70560, while the sum is 41.

The spelling of 11172057638 in words is "eleven billion, one hundred seventy-two million, fifty-seven thousand, six hundred thirty-eight".