8129742647156 has 48 divisors (see below), whose sum is σ = 15678318163200. Its totient is φ = 3664796026752.

The previous prime is 8129742647119. The next prime is 8129742647167. The reversal of 8129742647156 is 6517462479218.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88139510 + ... + 88231698.

It is an arithmetic number, because the mean of its divisors is an integer number (326631628400).

Almost surely, 2^{8129742647156} is an apocalyptic number.

8129742647156 is a gapful number since it is divisible by the number (86) formed by its first and last digit.

It is an amenable number.

8129742647156 is a deficient number, since it is larger than the sum of its proper divisors (7548575516044).

8129742647156 is a wasteful number, since it uses less digits than its factorization.

8129742647156 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131688 (or 131686 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 62.

The spelling of 8129742647156 in words is "eight trillion, one hundred twenty-nine billion, seven hundred forty-two million, six hundred forty-seven thousand, one hundred fifty-six".