23436655566545 has 24 divisors (see below), whose sum is σ = 30454518339000. Its totient is φ = 17306651621376.

The previous prime is 23436655566523. The next prime is 23436655566587. The reversal of 23436655566545 is 54566555663432.

It can be written as a sum of positive squares in 12 ways, for example, as 17223396411664 + 6213259154881 = 4150108^2 + 2492641^2 .

It is not a de Polignac number, because 23436655566545 - 2³⁴ = 23419475697361 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (65).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 37247411 + ... + 37871399.

It is an arithmetic number, because the mean of its divisors is an integer number (1268938264125).

Almost surely, 2^{23436655566545} is an apocalyptic number.

It is an amenable number.

23436655566545 is a deficient number, since it is larger than the sum of its proper divisors (7017862772455).

23436655566545 is a wasteful number, since it uses less digits than its factorization.

23436655566545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668469 (or 668456 counting only the distinct ones).

The product of its digits is 1166400000, while the sum is 65.

The spelling of 23436655566545 in words is "twenty-three trillion, four hundred thirty-six billion, six hundred fifty-five million, five hundred sixty-six thousand, five hundred forty-five".