656165651001 has 8 divisors (see below), whose sum is σ = 999871468224. Its totient is φ = 374951800560.

The previous prime is 656165650849. The next prime is 656165651039. The reversal of 656165651001 is 100156561656.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 656165651001 - 2¹⁷ = 656165519929 is a prime.

It is a super-2 number, since 2×656165651001² (a number of 24 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (656165651101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15622991670 + ... + 15622991711.

It is an arithmetic number, because the mean of its divisors is an integer number (124983933528).

Almost surely, 2^656165651001 is an apocalyptic number.

It is an amenable number.

656165651001 is a deficient number, since it is larger than the sum of its proper divisors (343705817223).

656165651001 is a wasteful number, since it uses less digits than its factorization.

656165651001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31245983391.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 656165651001 in words is "six hundred fifty-six billion, one hundred sixty-five million, six hundred fifty-one thousand, one".