117890777845051 has 2 divisors, whose sum is σ = 117890777845052. Its totient is φ = 117890777845050.

The previous prime is 117890777845033. The next prime is 117890777845067. The reversal of 117890777845051 is 150548777098711.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 117890777845051 - 2⁵ = 117890777845019 is a prime.

It is a super-2 number, since 2×117890777845051² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (117890777845021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58945388922525 + 58945388922526.

It is an arithmetic number, because the mean of its divisors is an integer number (58945388922526).

Almost surely, 2^{117890777845051} is an apocalyptic number.

117890777845051 is a deficient number, since it is larger than the sum of its proper divisors (1).

117890777845051 is an equidigital number, since it uses as much as digits as its factorization.

117890777845051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 138297600, while the sum is 70.

The spelling of 117890777845051 in words is "one hundred seventeen trillion, eight hundred ninety billion, seven hundred seventy-seven million, eight hundred forty-five thousand, fifty-one".