117154164877 has 2 divisors, whose sum is σ = 117154164878. Its totient is φ = 117154164876.

The previous prime is 117154164857. The next prime is 117154164893. The reversal of 117154164877 is 778461451711.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70727274916 + 46426889961 = 265946^2 + 215469^2 .

It is an emirp because it is prime and its reverse (778461451711) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117154164877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117154164847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58577082438 + 58577082439.

It is an arithmetic number, because the mean of its divisors is an integer number (58577082439).

Almost surely, 2^117154164877 is an apocalyptic number.

It is an amenable number.

117154164877 is a deficient number, since it is larger than the sum of its proper divisors (1).

117154164877 is an equidigital number, since it uses as much as digits as its factorization.

117154164877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1317120, while the sum is 52.

The spelling of 117154164877 in words is "one hundred seventeen billion, one hundred fifty-four million, one hundred sixty-four thousand, eight hundred seventy-seven".