64157031697267 has 2 divisors, whose sum is σ = 64157031697268. Its totient is φ = 64157031697266.

The previous prime is 64157031697177. The next prime is 64157031697303. The reversal of 64157031697267 is 76279613075146.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64157031697267 - 2¹⁵ = 64157031664499 is a prime.

It is a super-2 number, since 2×64157031697267² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64157031697199 and 64157031697208.

It is not a weakly prime, because it can be changed into another prime (64157031691267) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32078515848633 + 32078515848634.

It is an arithmetic number, because the mean of its divisors is an integer number (32078515848634).

Almost surely, 2^{64157031697267} is an apocalyptic number.

64157031697267 is a deficient number, since it is larger than the sum of its proper divisors (1).

64157031697267 is an equidigital number, since it uses as much as digits as its factorization.

64157031697267 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80015040, while the sum is 64.

The spelling of 64157031697267 in words is "sixty-four trillion, one hundred fifty-seven billion, thirty-one million, six hundred ninety-seven thousand, two hundred sixty-seven".