15631013426 has 48 divisors (see below), whose sum is σ = 29087100000. Its totient is φ = 6259494528.

The previous prime is 15631013413. The next prime is 15631013483. The reversal of 15631013426 is 62431013651.

It is a junction number, because it is equal to n+sod(n) for n = 15631013392 and 15631013401.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 197825 + ... + 265323.

It is an arithmetic number, because the mean of its divisors is an integer number (605981250).

Almost surely, 2^15631013426 is an apocalyptic number.

15631013426 is a deficient number, since it is larger than the sum of its proper divisors (13456086574).

15631013426 is a wasteful number, since it uses less digits than its factorization.

15631013426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67671 (or 67664 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 15631013426 in words is "fifteen billion, six hundred thirty-one million, thirteen thousand, four hundred twenty-six".