15728674513 has 4 divisors (see below), whose sum is σ = 15729052068. Its totient is φ = 15728296960.

The previous prime is 15728674501. The next prime is 15728674541. The reversal of 15728674513 is 31547682751.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1207701504 + 14520973009 = 34752^2 + 120503^2 .

It is a cyclic number.

It is not a de Polignac number, because 15728674513 - 2³³ = 7138739921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15728674573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117256 + ... + 212617.

It is an arithmetic number, because the mean of its divisors is an integer number (3932263017).

Almost surely, 2^15728674513 is an apocalyptic number.

It is an amenable number.

15728674513 is a deficient number, since it is larger than the sum of its proper divisors (377555).

15728674513 is an equidigital number, since it uses as much as digits as its factorization.

15728674513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377554.

The product of its digits is 1411200, while the sum is 49.

The spelling of 15728674513 in words is "fifteen billion, seven hundred twenty-eight million, six hundred seventy-four thousand, five hundred thirteen".