20722123562 has 32 divisors (see below), whose sum is σ = 37856858112. Its totient is φ = 8314037424.

The previous prime is 20722123549. The next prime is 20722123579. The reversal of 20722123562 is 26532122702.

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, 669488 + ... + 699755.

It is an arithmetic number, because the mean of its divisors is an integer number (1183026816).

Almost surely, 2^20722123562 is an apocalyptic number.

20722123562 is a deficient number, since it is larger than the sum of its proper divisors (17134734550).

20722123562 is a wasteful number, since it uses less digits than its factorization.

20722123562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1369322.

The product of its (nonzero) digits is 20160, while the sum is 32.

The spelling of 20722123562 in words is "twenty billion, seven hundred twenty-two million, one hundred twenty-three thousand, five hundred sixty-two".