13855672572 has 72 divisors (see below), whose sum is σ = 38245777920. Its totient is φ = 3891656160.

The previous prime is 13855672531. The next prime is 13855672601. The reversal of 13855672572 is 27527655831.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 165004 + ... + 234387.

It is an arithmetic number, because the mean of its divisors is an integer number (531191360).

Almost surely, 2^13855672572 is an apocalyptic number.

13855672572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13855672572 is an abundant number, since it is smaller than the sum of its proper divisors (24390105348).

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

13855672572 is a wasteful number, since it uses less digits than its factorization.

13855672572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399471 (or 399462 counting only the distinct ones).

The product of its digits is 3528000, while the sum is 51.

The spelling of 13855672572 in words is "thirteen billion, eight hundred fifty-five million, six hundred seventy-two thousand, five hundred seventy-two".