20456661762 has 24 divisors (see below), whose sum is σ = 44335075824. Its totient is φ = 6816993624.

The previous prime is 20456661749. The next prime is 20456661791. The reversal of 20456661762 is 26716665402.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90408 + ... + 221555.

It is an arithmetic number, because the mean of its divisors is an integer number (1847294826).

Almost surely, 2^20456661762 is an apocalyptic number.

20456661762 is an abundant number, since it is smaller than the sum of its proper divisors (23878414062).

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

20456661762 is a wasteful number, since it uses less digits than its factorization.

20456661762 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315614 (or 315611 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 20456661762 in words is "twenty billion, four hundred fifty-six million, six hundred sixty-one thousand, seven hundred sixty-two".