23890238691 has 32 divisors (see below), whose sum is σ = 35927162880. Its totient is φ = 13989693600.

The previous prime is 23890238653. The next prime is 23890238711. The reversal of 23890238691 is 19683209832.

It is not a de Polignac number, because 23890238691 - 2¹⁰ = 23890237667 is a prime.

It is not an unprimeable number, because it can be changed into a prime (23890238191) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 639630 + ... + 675948.

It is an arithmetic number, because the mean of its divisors is an integer number (1122723840).

Almost surely, 2^23890238691 is an apocalyptic number.

23890238691 is a deficient number, since it is larger than the sum of its proper divisors (12036924189).

23890238691 is a wasteful number, since it uses less digits than its factorization.

23890238691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37007.

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 23890238691 in words is "twenty-three billion, eight hundred ninety million, two hundred thirty-eight thousand, six hundred ninety-one".