23400666665161 has 4 divisors (see below), whose sum is σ = 24777176469012. Its totient is φ = 22024156861312.

The previous prime is 23400666665143. The next prime is 23400666665197. The reversal of 23400666665161 is 16156666600432.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7190742581136 + 16209924084025 = 2681556^2 + 4026155^2 .

It is a cyclic number.

It is not a de Polignac number, because 23400666665161 - 2³³ = 23392076730569 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23400666665099 and 23400666665108.

It is not an unprimeable number, because it can be changed into a prime (23400666665141) 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, 688254901900 + ... + 688254901933.

It is an arithmetic number, because the mean of its divisors is an integer number (6194294117253).

Almost surely, 2^{23400666665161} is an apocalyptic number.

It is an amenable number.

23400666665161 is a deficient number, since it is larger than the sum of its proper divisors (1376509803851).

23400666665161 is a wasteful number, since it uses less digits than its factorization.

23400666665161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376509803850.

The product of its (nonzero) digits is 5598720, while the sum is 52.

The spelling of 23400666665161 in words is "twenty-three trillion, four hundred billion, six hundred sixty-six million, six hundred sixty-five thousand, one hundred sixty-one".