165623560563415 has 16 divisors (see below), whose sum is σ = 203981121750240. Its totient is φ = 129054722734080.

The previous prime is 165623560563317. The next prime is 165623560563427. The reversal of 165623560563415 is 514365065326561.

It is not a de Polignac number, because 165623560563415 - 2⁹ = 165623560562903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 165623560563415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2777490906 + ... + 2777550535.

It is an arithmetic number, because the mean of its divisors is an integer number (12748820109390).

Almost surely, 2^{165623560563415} is an apocalyptic number.

165623560563415 is a deficient number, since it is larger than the sum of its proper divisors (38357561186825).

165623560563415 is an equidigital number, since it uses as much as digits as its factorization.

165623560563415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5555041602.

The product of its (nonzero) digits is 58320000, while the sum is 58.

The spelling of 165623560563415 in words is "one hundred sixty-five trillion, six hundred twenty-three billion, five hundred sixty million, five hundred sixty-three thousand, four hundred fifteen".