20964404460 has 24 divisors (see below), whose sum is σ = 58700332656. Its totient is φ = 5590507840.

The previous prime is 20964404443. The next prime is 20964404467. The reversal of 20964404460 is 6440446902.

It is not an unprimeable number, because it can be changed into a prime (20964404467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174703311 + ... + 174703430.

It is an arithmetic number, because the mean of its divisors is an integer number (2445847194).

Almost surely, 2^20964404460 is an apocalyptic number.

20964404460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20964404460 is an abundant number, since it is smaller than the sum of its proper divisors (37735928196).

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

20964404460 is a wasteful number, since it uses less digits than its factorization.

20964404460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349406753 (or 349406751 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 39.

The spelling of 20964404460 in words is "twenty billion, nine hundred sixty-four million, four hundred four thousand, four hundred sixty".