19664086080 has 56 divisors (see below), whose sum is σ = 62433476352. Its totient is φ = 5243756032.

The previous prime is 19664086073. The next prime is 19664086109. The reversal of 19664086080 is 8068046691.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 10240752 + ... + 10242671.

Almost surely, 2^19664086080 is an apocalyptic number.

19664086080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19664086080 is an abundant number, since it is smaller than the sum of its proper divisors (42769390272).

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

19664086080 is a wasteful number, since it uses less digits than its factorization.

19664086080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20483443 (or 20483433 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 48.

The spelling of 19664086080 in words is "nineteen billion, six hundred sixty-four million, eighty-six thousand, eighty".