15728572989 has 24 divisors (see below), whose sum is σ = 24161359040. Its totient is φ = 9831414528.

The previous prime is 15728572973. The next prime is 15728573041. The reversal of 15728572989 is 98927582751.

15728572989 is a `hidden beast` number, since 1 + 57 + 2 + 8 + 572 + 9 + 8 + 9 = 666.

It is not a de Polignac number, because 15728572989 - 2⁴ = 15728572973 is a prime.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15728572969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 457537 + ... + 490710.

Almost surely, 2^15728572989 is an apocalyptic number.

15728572989 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

15728572989 is a deficient number, since it is larger than the sum of its proper divisors (8432786051).

15728572989 is a wasteful number, since it uses less digits than its factorization.

15728572989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948369 (or 948366 counting only the distinct ones).

The product of its digits is 25401600, while the sum is 63.

The spelling of 15728572989 in words is "fifteen billion, seven hundred twenty-eight million, five hundred seventy-two thousand, nine hundred eighty-nine".