8156799238538 has 32 divisors (see below), whose sum is σ = 13306850278848. Its totient is φ = 3734245152000.

The previous prime is 8156799238513. The next prime is 8156799238591. The reversal of 8156799238538 is 8358329976518.

It is a Harshad number since it is a multiple of its sum of digits (74).

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, 8938253 + ... + 9808463.

It is an arithmetic number, because the mean of its divisors is an integer number (415839071214).

Almost surely, 2^{8156799238538} is an apocalyptic number.

8156799238538 is a deficient number, since it is larger than the sum of its proper divisors (5150051040310).

8156799238538 is a wasteful number, since it uses less digits than its factorization.

8156799238538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 877718.

The product of its digits is 783820800, while the sum is 74.

The spelling of 8156799238538 in words is "eight trillion, one hundred fifty-six billion, seven hundred ninety-nine million, two hundred thirty-eight thousand, five hundred thirty-eight".