157620046631 has 2 divisors, whose sum is σ = 157620046632. Its totient is φ = 157620046630.

The previous prime is 157620046553. The next prime is 157620046687. The reversal of 157620046631 is 136640026751.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157620046631 is a prime.

It is a super-2 number, since 2×157620046631² (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 (157620046691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78810023315 + 78810023316.

It is an arithmetic number, because the mean of its divisors is an integer number (78810023316).

Almost surely, 2^157620046631 is an apocalyptic number.

157620046631 is a deficient number, since it is larger than the sum of its proper divisors (1).

157620046631 is an equidigital number, since it uses as much as digits as its factorization.

157620046631 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 157620046631 in words is "one hundred fifty-seven billion, six hundred twenty million, forty-six thousand, six hundred thirty-one".