15728725158912 has 176 divisors, whose sum is σ = 47033124436480. Its totient is φ = 5192005423104.

The previous prime is 15728725158857. The next prime is 15728725158919. The reversal of 15728725158912 is 21985152782751.

It is a happy number.

15728725158912 is a `hidden beast` number, since 1 + 5 + 7 + 28 + 7 + 2 + 515 + 8 + 91 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 15728725158912.

It is not an unprimeable number, because it can be changed into a prime (15728725158919) 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, 86133 + ... + 5609355.

Almost surely, 2^{15728725158912} is an apocalyptic number.

15728725158912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15728725158912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23516562218240).

15728725158912 is an abundant number, since it is smaller than the sum of its proper divisors (31304399277568).

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

15728725158912 is a wasteful number, since it uses less digits than its factorization.

15728725158912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5523355 (or 5523331 counting only the distinct ones).

The product of its digits is 28224000, while the sum is 63.

The spelling of 15728725158912 in words is "fifteen trillion, seven hundred twenty-eight billion, seven hundred twenty-five million, one hundred fifty-eight thousand, nine hundred twelve".