15728273807536 has 40 divisors (see below), whose sum is σ = 31799578312800. Its totient is φ = 7521954925056.

The previous prime is 15728273807509. The next prime is 15728273807573. The reversal of 15728273807536 is 63570837282751.

It is a Smith number, since the sum of its digits (64) coincides with the sum of the digits of its prime factors.

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, 10003140 + ... + 11468188.

It is an arithmetic number, because the mean of its divisors is an integer number (794989457820).

Almost surely, 2^{15728273807536} is an apocalyptic number.

15728273807536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

15728273807536 is an abundant number, since it is smaller than the sum of its proper divisors (16071304505264).

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

15728273807536 is a wasteful number, since it uses less digits than its factorization.

15728273807536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494253 (or 1494247 counting only the distinct ones).

The product of its (nonzero) digits is 118540800, while the sum is 64.

The spelling of 15728273807536 in words is "fifteen trillion, seven hundred twenty-eight billion, two hundred seventy-three million, eight hundred seven thousand, five hundred thirty-six".