21653053126264 has 32 divisors (see below), whose sum is σ = 46400216601600. Its totient is φ = 9279716502240.

The previous prime is 21653053126231. The next prime is 21653053126267. The reversal of 21653053126264 is 46262135035612.

It is a super-2 number, since 2×21653053126264² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21653053126267) 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, 168544 + ... + 6582895.

It is an arithmetic number, because the mean of its divisors is an integer number (1450006768800).

Almost surely, 2^{21653053126264} is an apocalyptic number.

It is an amenable number.

21653053126264 is an abundant number, since it is smaller than the sum of its proper divisors (24747163475336).

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

21653053126264 is a wasteful number, since it uses less digits than its factorization.

21653053126264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6808723 (or 6808719 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 46.

The spelling of 21653053126264 in words is "twenty-one trillion, six hundred fifty-three billion, fifty-three million, one hundred twenty-six thousand, two hundred sixty-four".