20662316562 has 32 divisors (see below), whose sum is σ = 44100052992. Its totient is φ = 6431249664.

The previous prime is 20662316531. The next prime is 20662316599. The reversal of 20662316562 is 26561326602.

It is a self number, because there is not a number n which added to its sum of digits gives 20662316562.

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, 784573 + ... + 810480.

It is an arithmetic number, because the mean of its divisors is an integer number (1378126656).

Almost surely, 2^20662316562 is an apocalyptic number.

20662316562 is an abundant number, since it is smaller than the sum of its proper divisors (23437736430).

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

20662316562 is a wasteful number, since it uses less digits than its factorization.

20662316562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1595202.

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 20662316562 in words is "twenty billion, six hundred sixty-two million, three hundred sixteen thousand, five hundred sixty-two".