157497139199 has 4 divisors (see below), whose sum is σ = 161338532880. Its totient is φ = 153655745520.

The previous prime is 157497139141. The next prime is 157497139211. The reversal of 157497139199 is 991931794751.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157497139199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157497169199) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1920696779 + ... + 1920696860.

It is an arithmetic number, because the mean of its divisors is an integer number (40334633220).

Almost surely, 2^157497139199 is an apocalyptic number.

157497139199 is a deficient number, since it is larger than the sum of its proper divisors (3841393681).

157497139199 is an equidigital number, since it uses as much as digits as its factorization.

157497139199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3841393680.

The product of its digits is 19289340, while the sum is 65.

The spelling of 157497139199 in words is "one hundred fifty-seven billion, four hundred ninety-seven million, one hundred thirty-nine thousand, one hundred ninety-nine".