662326725161 has 4 divisors (see below), whose sum is σ = 683692103424. Its totient is φ = 640961346900.

The previous prime is 662326725157. The next prime is 662326725169. The reversal of 662326725161 is 161527623266.

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 662326725161 - 2² = 662326725157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (662326725169) 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, 10682689085 + ... + 10682689146.

It is an arithmetic number, because the mean of its divisors is an integer number (170923025856).

Almost surely, 2^662326725161 is an apocalyptic number.

It is an amenable number.

662326725161 is a deficient number, since it is larger than the sum of its proper divisors (21365378263).

662326725161 is a wasteful number, since it uses less digits than its factorization.

662326725161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21365378262.

The product of its digits is 1088640, while the sum is 47.

The spelling of 662326725161 in words is "six hundred sixty-two billion, three hundred twenty-six million, seven hundred twenty-five thousand, one hundred sixty-one".