23620402164665 has 8 divisors (see below), whose sum is σ = 28344694781448. Its totient is φ = 18896180275840.

The previous prime is 23620402164661. The next prime is 23620402164677. The reversal of 23620402164665 is 56646120402632.

It can be written as a sum of positive squares in 4 ways, for example, as 12174035135161 + 11446367029504 = 3489131^2 + 3383248^2 .

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

It is not a de Polignac number, because 23620402164665 - 2² = 23620402164661 is a prime.

It is a super-2 number, since 2×23620402164665² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23620402164661) 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, 16944476 + ... + 18285405.

It is an arithmetic number, because the mean of its divisors is an integer number (3543086847681).

Almost surely, 2^{23620402164665} is an apocalyptic number.

It is an amenable number.

23620402164665 is a deficient number, since it is larger than the sum of its proper divisors (4724292616783).

23620402164665 is a wasteful number, since it uses less digits than its factorization.

23620402164665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35363979.

The product of its (nonzero) digits is 2488320, while the sum is 47.

The spelling of 23620402164665 in words is "twenty-three trillion, six hundred twenty billion, four hundred two million, one hundred sixty-four thousand, six hundred sixty-five".