39157891125 has 16 divisors (see below), whose sum is σ = 65158731456. Its totient is φ = 20884208400.

The previous prime is 39157891111. The next prime is 39157891139. The reversal of 39157891125 is 52119875193.

It is an interprime number because it is at equal distance from previous prime (39157891111) and next prime (39157891139).

It is not a de Polignac number, because 39157891125 - 2⁴ = 39157891109 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 52210147 + ... + 52210896.

It is an arithmetic number, because the mean of its divisors is an integer number (4072420716).

Almost surely, 2^39157891125 is an apocalyptic number.

It is an amenable number.

39157891125 is a deficient number, since it is larger than the sum of its proper divisors (26000840331).

39157891125 is a wasteful number, since it uses less digits than its factorization.

39157891125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104421061 (or 104421051 counting only the distinct ones).

The product of its digits is 680400, while the sum is 51.

The spelling of 39157891125 in words is "thirty-nine billion, one hundred fifty-seven million, eight hundred ninety-one thousand, one hundred twenty-five".