19620615432 has 64 divisors (see below), whose sum is σ = 53530709760. Its totient is φ = 5943425600.

The previous prime is 19620615409. The next prime is 19620615437. The reversal of 19620615432 is 23451602691.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (19620615437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 782563 + ... + 807245.

It is an arithmetic number, because the mean of its divisors is an integer number (836417340).

Almost surely, 2^19620615432 is an apocalyptic number.

19620615432 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19620615432 is an abundant number, since it is smaller than the sum of its proper divisors (33910094328).

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

19620615432 is a wasteful number, since it uses less digits than its factorization.

19620615432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27714 (or 27710 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 39.

The spelling of 19620615432 in words is "nineteen billion, six hundred twenty million, six hundred fifteen thousand, four hundred thirty-two".