20557220622 has 16 divisors (see below), whose sum is σ = 41139124992. Its totient is φ = 6848292920.

The previous prime is 20557220617. The next prime is 20557220647. The reversal of 20557220622 is 22602275502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1017654 + ... + 1037657.

It is an arithmetic number, because the mean of its divisors is an integer number (2571195312).

Almost surely, 2^20557220622 is an apocalyptic number.

20557220622 is an abundant number, since it is smaller than the sum of its proper divisors (20581904370).

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

20557220622 is a wasteful number, since it uses less digits than its factorization.

20557220622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2056983.

The product of its (nonzero) digits is 33600, while the sum is 33.

The spelling of 20557220622 in words is "twenty billion, five hundred fifty-seven million, two hundred twenty thousand, six hundred twenty-two".