19880742264 has 32 divisors (see below), whose sum is σ = 52317744000. Its totient is φ = 6278128992.

The previous prime is 19880742257. The next prime is 19880742281. The reversal of 19880742264 is 46224708891.

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, 21798604 + ... + 21799515.

It is an arithmetic number, because the mean of its divisors is an integer number (1634929500).

Almost surely, 2^19880742264 is an apocalyptic number.

It is an amenable number.

19880742264 is an abundant number, since it is smaller than the sum of its proper divisors (32437001736).

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

19880742264 is a wasteful number, since it uses less digits than its factorization.

19880742264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43598147 (or 43598143 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 19880742264 in words is "nineteen billion, eight hundred eighty million, seven hundred forty-two thousand, two hundred sixty-four".