117923153137 has 2 divisors, whose sum is σ = 117923153138. Its totient is φ = 117923153136.

The previous prime is 117923153129. The next prime is 117923153197. The reversal of 117923153137 is 731351329711.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68142403681 + 49780749456 = 261041^2 + 223116^2 .

It is a cyclic number.

It is not a de Polignac number, because 117923153137 - 2³ = 117923153129 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 117923153093 and 117923153102.

It is not a weakly prime, because it can be changed into another prime (117923153197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58961576568 + 58961576569.

It is an arithmetic number, because the mean of its divisors is an integer number (58961576569).

Almost surely, 2^117923153137 is an apocalyptic number.

It is an amenable number.

117923153137 is a deficient number, since it is larger than the sum of its proper divisors (1).

117923153137 is an equidigital number, since it uses as much as digits as its factorization.

117923153137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 119070, while the sum is 43.

The spelling of 117923153137 in words is "one hundred seventeen billion, nine hundred twenty-three million, one hundred fifty-three thousand, one hundred thirty-seven".