21123158754588 has 48 divisors (see below), whose sum is σ = 53903476470144. Its totient is φ = 6384833864640.

The previous prime is 21123158754563. The next prime is 21123158754613. The reversal of 21123158754588 is 88545785132112.

It is an interprime number because it is at equal distance from previous prime (21123158754563) and next prime (21123158754613).

It is a super-2 number, since 2×21123158754588² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 201489070 + ... + 201593877.

It is an arithmetic number, because the mean of its divisors is an integer number (1122989093128).

Almost surely, 2^{21123158754588} is an apocalyptic number.

It is an amenable number.

21123158754588 is an abundant number, since it is smaller than the sum of its proper divisors (32780317715556).

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

21123158754588 is a wasteful number, since it uses less digits than its factorization.

21123158754588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 403083362 (or 403083360 counting only the distinct ones).

The product of its digits is 21504000, while the sum is 60.

The spelling of 21123158754588 in words is "twenty-one trillion, one hundred twenty-three billion, one hundred fifty-eight million, seven hundred fifty-four thousand, five hundred eighty-eight".