20575379378832 has 80 divisors (see below), whose sum is σ = 53378289731520. Its totient is φ = 6829431347200.

The previous prime is 20575379378809. The next prime is 20575379378893. The reversal of 20575379378832 is 23887397357502.

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, 19460719 + ... + 20490737.

It is an arithmetic number, because the mean of its divisors is an integer number (667228621644).

Almost surely, 2^{20575379378832} is an apocalyptic number.

It is an amenable number.

20575379378832 is an abundant number, since it is smaller than the sum of its proper divisors (32802910352688).

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

20575379378832 is a wasteful number, since it uses less digits than its factorization.

20575379378832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031792 (or 1031786 counting only the distinct ones).

The product of its (nonzero) digits is 533433600, while the sum is 69.

The spelling of 20575379378832 in words is "twenty trillion, five hundred seventy-five billion, three hundred seventy-nine million, three hundred seventy-eight thousand, eight hundred thirty-two".