157767716431 has 4 divisors (see below), whose sum is σ = 169903694632. Its totient is φ = 145631738232.

The previous prime is 157767716401. The next prime is 157767716441. The reversal of 157767716431 is 134617767751.

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

It is a cyclic number.

It is not a de Polignac number, because 157767716431 - 2¹⁵ = 157767683663 is a prime.

It is a super-2 number, since 2×157767716431² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157767716401) 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, 6067989081 + ... + 6067989106.

It is an arithmetic number, because the mean of its divisors is an integer number (42475923658).

Almost surely, 2^157767716431 is an apocalyptic number.

157767716431 is a deficient number, since it is larger than the sum of its proper divisors (12135978201).

157767716431 is a wasteful number, since it uses less digits than its factorization.

157767716431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12135978200.

The product of its digits is 5186160, while the sum is 55.

The spelling of 157767716431 in words is "one hundred fifty-seven billion, seven hundred sixty-seven million, seven hundred sixteen thousand, four hundred thirty-one".