115670557066561 has 4 divisors (see below), whose sum is σ = 132194922361792. Its totient is φ = 99146191771332.

The previous prime is 115670557066523. The next prime is 115670557066607. The reversal of 115670557066561 is 165660755076511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 115670557066561 - 2¹⁹ = 115670556542273 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 115670557066561.

It is not an unprimeable number, because it can be changed into a prime (115670557066501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8262182647605 + ... + 8262182647618.

It is an arithmetic number, because the mean of its divisors is an integer number (33048730590448).

Almost surely, 2^{115670557066561} is an apocalyptic number.

It is an amenable number.

115670557066561 is a deficient number, since it is larger than the sum of its proper divisors (16524365295231).

115670557066561 is an equidigital number, since it uses as much as digits as its factorization.

115670557066561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16524365295230.

The product of its (nonzero) digits is 39690000, while the sum is 61.

The spelling of 115670557066561 in words is "one hundred fifteen trillion, six hundred seventy billion, five hundred fifty-seven million, sixty-six thousand, five hundred sixty-one".