13656538870 has 32 divisors (see below), whose sum is σ = 26583500160. Its totient is φ = 5021304960.

The previous prime is 13656538853. The next prime is 13656538877. The reversal of 13656538870 is 7883565631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13656538877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 188701 + ... + 250840.

It is an arithmetic number, because the mean of its divisors is an integer number (830734380).

Almost surely, 2^13656538870 is an apocalyptic number.

13656538870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13656538870 is a deficient number, since it is larger than the sum of its proper divisors (12926961290).

13656538870 is a wasteful number, since it uses less digits than its factorization.

13656538870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 439800.

The product of its (nonzero) digits is 3628800, while the sum is 52.

The spelling of 13656538870 in words is "thirteen billion, six hundred fifty-six million, five hundred thirty-eight thousand, eight hundred seventy".