117804087056561 has 2 divisors, whose sum is σ = 117804087056562. Its totient is φ = 117804087056560.

The previous prime is 117804087056441. The next prime is 117804087056573. The reversal of 117804087056561 is 165650780408711.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109705828143025 + 8098258913536 = 10474055^2 + 2845744^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-117804087056561 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 117804087056561.

It is not a weakly prime, because it can be changed into another prime (117804087056261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58902043528280 + 58902043528281.

It is an arithmetic number, because the mean of its divisors is an integer number (58902043528281).

Almost surely, 2^{117804087056561} is an apocalyptic number.

It is an amenable number.

117804087056561 is a deficient number, since it is larger than the sum of its proper divisors (1).

117804087056561 is an equidigital number, since it uses as much as digits as its factorization.

117804087056561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11289600, while the sum is 59.

The spelling of 117804087056561 in words is "one hundred seventeen trillion, eight hundred four billion, eighty-seven million, fifty-six thousand, five hundred sixty-one".