15327677128 has 16 divisors (see below), whose sum is σ = 29516135580. Its totient is φ = 7456707648.

The previous prime is 15327677111. The next prime is 15327677137. The reversal of 15327677128 is 82177672351.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 15281409924 + 46267204 = 123618^2 + 6802^2 .

It is a super-2 number, since 2×15327677128² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25891051 + ... + 25891642.

Almost surely, 2^15327677128 is an apocalyptic number.

It is an amenable number.

15327677128 is a deficient number, since it is larger than the sum of its proper divisors (14188458452).

15327677128 is a wasteful number, since it uses less digits than its factorization.

15327677128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51782736 (or 51782732 counting only the distinct ones).

The product of its digits is 987840, while the sum is 49.

The spelling of 15327677128 in words is "fifteen billion, three hundred twenty-seven million, six hundred seventy-seven thousand, one hundred twenty-eight".