23149822813 has 18 divisors (see below), whose sum is σ = 26323626042. Its totient is φ = 20235264480.

The previous prime is 23149822807. The next prime is 23149822831. The reversal of 23149822813 is 31822894132.

It can be written as a sum of positive squares in 3 ways, for example, as 3177915129 + 19971907684 = 56373^2 + 141322^2 .

It is not a de Polignac number, because 23149822813 - 2¹³ = 23149814621 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 23149822813.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23149826813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10422043 + ... + 10424263.

It is an arithmetic number, because the mean of its divisors is an integer number (1462423669).

Almost surely, 2^23149822813 is an apocalyptic number.

It is an amenable number.

23149822813 is a deficient number, since it is larger than the sum of its proper divisors (3173803229).

23149822813 is an frugal number, since it uses more digits than its factorization.

23149822813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4493 (or 2253 counting only the distinct ones).

The product of its digits is 165888, while the sum is 43.

The spelling of 23149822813 in words is "twenty-three billion, one hundred forty-nine million, eight hundred twenty-two thousand, eight hundred thirteen".