13787864972 has 24 divisors (see below), whose sum is σ = 27751380384. Its totient is φ = 5871445632.

The previous prime is 13787864971. The next prime is 13787865017. The reversal of 13787864972 is 27946878731.

It is a super-2 number, since 2×13787864972² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13787864971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1563833 + ... + 1572624.

It is an arithmetic number, because the mean of its divisors is an integer number (1156307516).

Almost surely, 2^13787864972 is an apocalyptic number.

It is an amenable number.

13787864972 is an abundant number, since it is smaller than the sum of its proper divisors (13963515412).

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

13787864972 is a wasteful number, since it uses less digits than its factorization.

13787864972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3136625 (or 3136623 counting only the distinct ones).

The product of its digits is 28449792, while the sum is 62.

The spelling of 13787864972 in words is "thirteen billion, seven hundred eighty-seven million, eight hundred sixty-four thousand, nine hundred seventy-two".