23170263857 has 12 divisors (see below), whose sum is σ = 25099311564. Its totient is φ = 21379737600.

The previous prime is 23170263797. The next prime is 23170263881. The reversal of 23170263857 is 75836207132.

It can be written as a sum of positive squares in 6 ways, for example, as 902461681 + 22267802176 = 30041^2 + 149224^2 .

It is not a de Polignac number, because 23170263857 - 2²⁸ = 22901828401 is a prime.

It is a super-2 number, since 2×23170263857² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23170263757) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 440357 + ... + 490157.

It is an arithmetic number, because the mean of its divisors is an integer number (2091609297).

Almost surely, 2^23170263857 is an apocalyptic number.

It is an amenable number.

23170263857 is a deficient number, since it is larger than the sum of its proper divisors (1929047707).

23170263857 is a wasteful number, since it uses less digits than its factorization.

23170263857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52580 (or 52567 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 44.

The spelling of 23170263857 in words is "twenty-three billion, one hundred seventy million, two hundred sixty-three thousand, eight hundred fifty-seven".