15782216472 has 64 divisors (see below), whose sum is σ = 47824905600. Its totient is φ = 4782489120.

The previous prime is 15782216459. The next prime is 15782216497. The reversal of 15782216472 is 27461228751.

15782216472 is a `hidden beast` number, since 1 + 578 + 2 + 2 + 1 + 6 + 4 + 72 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3318798 + ... + 3323549.

It is an arithmetic number, because the mean of its divisors is an integer number (747264150).

Almost surely, 2^15782216472 is an apocalyptic number.

15782216472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15782216472 is an abundant number, since it is smaller than the sum of its proper divisors (32042689128).

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

15782216472 is a wasteful number, since it uses less digits than its factorization.

15782216472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6642373 (or 6642363 counting only the distinct ones).

The product of its digits is 376320, while the sum is 45.

The spelling of 15782216472 in words is "fifteen billion, seven hundred eighty-two million, two hundred sixteen thousand, four hundred seventy-two".