20421274588 has 192 divisors, whose sum is σ = 44609273856. Its totient is φ = 8054784000.

The previous prime is 20421274571. The next prime is 20421274591. The reversal of 20421274588 is 88547212402.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 106917573 + ... + 106917763.

It is an arithmetic number, because the mean of its divisors is an integer number (232339968).

Almost surely, 2^20421274588 is an apocalyptic number.

It is an amenable number.

20421274588 is an abundant number, since it is smaller than the sum of its proper divisors (24187999268).

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

20421274588 is a wasteful number, since it uses less digits than its factorization.

20421274588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 402 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 43.

The spelling of 20421274588 in words is "twenty billion, four hundred twenty-one million, two hundred seventy-four thousand, five hundred eighty-eight".