21526634051334 has 40 divisors (see below), whose sum is σ = 48244015822728. Its totient is φ = 7174293625440.

The previous prime is 21526634051323. The next prime is 21526634051339. The reversal of 21526634051334 is 43315043662512.

21526634051334 is a `hidden beast` number, since 2 + 1 + 5 + 2 + 6 + 63 + 40 + 513 + 34 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 21526634051334.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21526634051339) 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 19 ways as a sum of consecutive naturals, for example, 10651612 + ... + 12510399.

Almost surely, 2^{21526634051334} is an apocalyptic number.

21526634051334 is an abundant number, since it is smaller than the sum of its proper divisors (26717381771394).

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

21526634051334 is a wasteful number, since it uses less digits than its factorization.

21526634051334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23167762 (or 23167753 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 45.

The spelling of 21526634051334 in words is "twenty-one trillion, five hundred twenty-six billion, six hundred thirty-four million, fifty-one thousand, three hundred thirty-four".