117950447764781 has 2 divisors, whose sum is σ = 117950447764782. Its totient is φ = 117950447764780.

The previous prime is 117950447764769. The next prime is 117950447764819. The reversal of 117950447764781 is 187467744059711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100322760015625 + 17627687749156 = 10016125^2 + 4198534^2 .

It is a cyclic number.

It is not a de Polignac number, because 117950447764781 - 2³⁰ = 117949374022957 is a prime.

It is a super-2 number, since 2×117950447764781² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (117950447764711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58975223882390 + 58975223882391.

It is an arithmetic number, because the mean of its divisors is an integer number (58975223882391).

Almost surely, 2^{117950447764781} is an apocalyptic number.

It is an amenable number.

117950447764781 is a deficient number, since it is larger than the sum of its proper divisors (1).

117950447764781 is an equidigital number, since it uses as much as digits as its factorization.

117950447764781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331914240, while the sum is 71.

The spelling of 117950447764781 in words is "one hundred seventeen trillion, nine hundred fifty billion, four hundred forty-seven million, seven hundred sixty-four thousand, seven hundred eighty-one".