163660624264601 has 4 divisors (see below), whose sum is σ = 163959821018832. Its totient is φ = 163361427510372.

The previous prime is 163660624264559. The next prime is 163660624264651. The reversal of 163660624264601 is 106462426066361.

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 163660624264601 - 2¹⁸ = 163660624002457 is a prime.

It is a super-2 number, since 2×163660624264601² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163660624264651) 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, 149598376295 + ... + 149598377388.

It is an arithmetic number, because the mean of its divisors is an integer number (40989955254708).

Almost surely, 2^{163660624264601} is an apocalyptic number.

It is an amenable number.

163660624264601 is a deficient number, since it is larger than the sum of its proper divisors (299196754231).

163660624264601 is an equidigital number, since it uses as much as digits as its factorization.

163660624264601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299196754230.

The product of its (nonzero) digits is 8957952, while the sum is 53.

The spelling of 163660624264601 in words is "one hundred sixty-three trillion, six hundred sixty billion, six hundred twenty-four million, two hundred sixty-four thousand, six hundred one".