23171577621745 has 16 divisors (see below), whose sum is σ = 31778251832448. Its totient is φ = 15889037679360.

The previous prime is 23171577621737. The next prime is 23171577621749. The reversal of 23171577621745 is 54712677517132.

It is not a de Polignac number, because 23171577621745 - 2³ = 23171577621737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23171577621745.

It is not an unprimeable number, because it can be changed into a prime (23171577621749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16533625 + ... + 17880265.

It is an arithmetic number, because the mean of its divisors is an integer number (1986140739528).

Almost surely, 2^{23171577621745} is an apocalyptic number.

It is an amenable number.

23171577621745 is a deficient number, since it is larger than the sum of its proper divisors (8606674210703).

23171577621745 is a wasteful number, since it uses less digits than its factorization.

23171577621745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1838280.

The product of its digits is 17287200, while the sum is 58.

The spelling of 23171577621745 in words is "twenty-three trillion, one hundred seventy-one billion, five hundred seventy-seven million, six hundred twenty-one thousand, seven hundred forty-five".