21376624652688 has 40 divisors (see below), whose sum is σ = 55223668612768. Its totient is φ = 7125448442112.

The previous prime is 21376624652681. The next prime is 21376624652707. The reversal of 21376624652688 is 88625642667312.

It is not an unprimeable number, because it can be changed into a prime (21376624652681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 852156 + ... + 6593892.

Almost surely, 2^{21376624652688} is an apocalyptic number.

It is an amenable number.

21376624652688 is an abundant number, since it is smaller than the sum of its proper divisors (33847043960080).

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

21376624652688 is a wasteful number, since it uses less digits than its factorization.

21376624652688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5819311 (or 5819305 counting only the distinct ones).

The product of its digits is 278691840, while the sum is 66.

The spelling of 21376624652688 in words is "twenty-one trillion, three hundred seventy-six billion, six hundred twenty-four million, six hundred fifty-two thousand, six hundred eighty-eight".