21386134626696 has 192 divisors, whose sum is σ = 72259844966400. Its totient is φ = 5788728099648.

The previous prime is 21386134626653. The next prime is 21386134626697. The reversal of 21386134626696 is 69662643168312.

21386134626696 is a `hidden beast` number, since 2 + 1 + 3 + 8 + 613 + 4 + 6 + 2 + 6 + 6 + 9 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (21386134626697) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 41098960 + ... + 41616063.

It is an arithmetic number, because the mean of its divisors is an integer number (376353359200).

Almost surely, 2^{21386134626696} is an apocalyptic number.

It is an amenable number.

21386134626696 is an abundant number, since it is smaller than the sum of its proper divisors (50873710339704).

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

21386134626696 is a wasteful number, since it uses less digits than its factorization.

21386134626696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82715070 (or 82715054 counting only the distinct ones).

The product of its digits is 80621568, while the sum is 63.

The spelling of 21386134626696 in words is "twenty-one trillion, three hundred eighty-six billion, one hundred thirty-four million, six hundred twenty-six thousand, six hundred ninety-six".