15677968427 has 24 divisors (see below), whose sum is σ = 18725038080. Its totient is φ = 13066930800.

The previous prime is 15677968409. The next prime is 15677968483. The reversal of 15677968427 is 72486977651.

It is not a de Polignac number, because 15677968427 - 2⁶ = 15677968363 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 15677968427.

It is not an unprimeable number, because it can be changed into a prime (15677968027) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38723 + ... + 181260.

It is an arithmetic number, because the mean of its divisors is an integer number (780209920).

Almost surely, 2^15677968427 is an apocalyptic number.

15677968427 is a deficient number, since it is larger than the sum of its proper divisors (3047069653).

15677968427 is a wasteful number, since it uses less digits than its factorization.

15677968427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220055 (or 220044 counting only the distinct ones).

The product of its digits is 35562240, while the sum is 62.

The spelling of 15677968427 in words is "fifteen billion, six hundred seventy-seven million, nine hundred sixty-eight thousand, four hundred twenty-seven".