13866929772 has 72 divisors (see below), whose sum is σ = 33162494400. Its totient is φ = 4508618400.

The previous prime is 13866929743. The next prime is 13866929821. The reversal of 13866929772 is 27792966831.

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, 16142679 + ... + 16143537.

It is an arithmetic number, because the mean of its divisors is an integer number (460590200).

Almost surely, 2^13866929772 is an apocalyptic number.

13866929772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13866929772 is an abundant number, since it is smaller than the sum of its proper divisors (19295564628).

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

13866929772 is a wasteful number, since it uses less digits than its factorization.

13866929772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227 (or 1074 counting only the distinct ones).

The product of its digits is 13716864, while the sum is 60.

The spelling of 13866929772 in words is "thirteen billion, eight hundred sixty-six million, nine hundred twenty-nine thousand, seven hundred seventy-two".