162657706856731 has 2 divisors, whose sum is σ = 162657706856732. Its totient is φ = 162657706856730.

The previous prime is 162657706856651. The next prime is 162657706856759. The reversal of 162657706856731 is 137658607756261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 162657706856731 - 2²³ = 162657698468123 is a prime.

It is a super-2 number, since 2×162657706856731² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (162657706856791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81328853428365 + 81328853428366.

It is an arithmetic number, because the mean of its divisors is an integer number (81328853428366).

Almost surely, 2^{162657706856731} is an apocalyptic number.

162657706856731 is a deficient number, since it is larger than the sum of its proper divisors (1).

162657706856731 is an equidigital number, since it uses as much as digits as its factorization.

162657706856731 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 533433600, while the sum is 70.

The spelling of 162657706856731 in words is "one hundred sixty-two trillion, six hundred fifty-seven billion, seven hundred six million, eight hundred fifty-six thousand, seven hundred thirty-one".