23697270891 has 48 divisors (see below), whose sum is σ = 40159601664. Its totient is φ = 13184197632.

The previous prime is 23697270869. The next prime is 23697270899. The reversal of 23697270891 is 19807279632.

23697270891 is a `hidden beast` number, since 2 + 369 + 7 + 270 + 8 + 9 + 1 = 666.

It is not a de Polignac number, because 23697270891 - 2⁶ = 23697270827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23697270899) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 550740 + ... + 592206.

It is an arithmetic number, because the mean of its divisors is an integer number (836658368).

Almost surely, 2^23697270891 is an apocalyptic number.

23697270891 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

23697270891 is a deficient number, since it is larger than the sum of its proper divisors (16462330773).

23697270891 is a wasteful number, since it uses less digits than its factorization.

23697270891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41720 (or 41717 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 23697270891 in words is "twenty-three billion, six hundred ninety-seven million, two hundred seventy thousand, eight hundred ninety-one".