23253438779 has 16 divisors (see below), whose sum is σ = 23978989440. Its totient is φ = 22540015680.

The previous prime is 23253438739. The next prime is 23253438787. The reversal of 23253438779 is 97783435232.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 23253438779 - 2¹⁶ = 23253373243 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 23253438779.

It is not an unprimeable number, because it can be changed into a prime (23253438739) 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, 2674319 + ... + 2682999.

It is an arithmetic number, because the mean of its divisors is an integer number (1498686840).

Almost surely, 2^23253438779 is an apocalyptic number.

23253438779 is a deficient number, since it is larger than the sum of its proper divisors (725550661).

23253438779 is an equidigital number, since it uses as much as digits as its factorization.

23253438779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9370.

The product of its digits is 7620480, while the sum is 53.

The spelling of 23253438779 in words is "twenty-three billion, two hundred fifty-three million, four hundred thirty-eight thousand, seven hundred seventy-nine".