23172437845 has 8 divisors (see below), whose sum is σ = 28703923200. Its totient is φ = 17939951760.

The previous prime is 23172437819. The next prime is 23172437879. The reversal of 23172437845 is 54873427132.

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

It is not a de Polignac number, because 23172437845 - 2¹⁵ = 23172405077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23172437795 and 23172437804.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74749645 + ... + 74749954.

It is an arithmetic number, because the mean of its divisors is an integer number (3587990400).

Almost surely, 2^23172437845 is an apocalyptic number.

It is an amenable number.

23172437845 is a deficient number, since it is larger than the sum of its proper divisors (5531485355).

23172437845 is a wasteful number, since it uses less digits than its factorization.

23172437845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149499635.

The product of its digits is 1128960, while the sum is 46.

The spelling of 23172437845 in words is "twenty-three billion, one hundred seventy-two million, four hundred thirty-seven thousand, eight hundred forty-five".