23268777813 has 24 divisors (see below), whose sum is σ = 34795832448. Its totient is φ = 14974466112.

The previous prime is 23268777809. The next prime is 23268777859. The reversal of 23268777813 is 31877786232.

It is a happy number.

It is not a de Polignac number, because 23268777813 - 2² = 23268777809 is a prime.

It is a super-2 number, since 2×23268777813² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23268777813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23268777613) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 345895 + ... + 407652.

It is an arithmetic number, because the mean of its divisors is an integer number (1449826352).

Almost surely, 2^23268777813 is an apocalyptic number.

It is an amenable number.

23268777813 is a deficient number, since it is larger than the sum of its proper divisors (11527054635).

23268777813 is a wasteful number, since it uses less digits than its factorization.

23268777813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 753673 (or 753670 counting only the distinct ones).

The product of its digits is 4741632, while the sum is 54.

The spelling of 23268777813 in words is "twenty-three billion, two hundred sixty-eight million, seven hundred seventy-seven thousand, eight hundred thirteen".