97157677769 has 2 divisors, whose sum is σ = 97157677770. Its totient is φ = 97157677768.

The previous prime is 97157677763. The next prime is 97157677777. The reversal of 97157677769 is 96777675179.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56531244169 + 40626433600 = 237763^2 + 201560^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-97157677769 is a prime.

It is a super-2 number, since 2×97157677769² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (97157677763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48578838884 + 48578838885.

It is an arithmetic number, because the mean of its divisors is an integer number (48578838885).

Almost surely, 2^97157677769 is an apocalyptic number.

It is an amenable number.

97157677769 is a deficient number, since it is larger than the sum of its proper divisors (1).

97157677769 is an equidigital number, since it uses as much as digits as its factorization.

97157677769 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 245046060, while the sum is 71.

The spelling of 97157677769 in words is "ninety-seven billion, one hundred fifty-seven million, six hundred seventy-seven thousand, seven hundred sixty-nine".