157474777631 has 2 divisors, whose sum is σ = 157474777632. Its totient is φ = 157474777630.

The previous prime is 157474777583. The next prime is 157474777643. The reversal of 157474777631 is 136777474751.

157474777631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 157474777631 - 2⁶ = 157474777567 is a prime.

It is a super-2 number, since 2×157474777631² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157474777651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78737388815 + 78737388816.

It is an arithmetic number, because the mean of its divisors is an integer number (78737388816).

Almost surely, 2^157474777631 is an apocalyptic number.

157474777631 is a deficient number, since it is larger than the sum of its proper divisors (1).

157474777631 is an equidigital number, since it uses as much as digits as its factorization.

157474777631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24202080, while the sum is 59.

The spelling of 157474777631 in words is "one hundred fifty-seven billion, four hundred seventy-four million, seven hundred seventy-seven thousand, six hundred thirty-one".