20910555032 has 72 divisors (see below), whose sum is σ = 42550634700. Its totient is φ = 9606895488.

The previous prime is 20910555031. The next prime is 20910555049. The reversal of 20910555032 is 23055501902.

It is a self number, because there is not a number n which added to its sum of digits gives 20910555032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20910555031) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 65963738 + ... + 65964054.

Almost surely, 2^20910555032 is an apocalyptic number.

It is an amenable number.

20910555032 is an abundant number, since it is smaller than the sum of its proper divisors (21640079668).

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

20910555032 is an equidigital number, since it uses as much as digits as its factorization.

20910555032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733 (or 375 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 32.

The spelling of 20910555032 in words is "twenty billion, nine hundred ten million, five hundred fifty-five thousand, thirty-two".