23365775979 has 144 divisors (see below), whose sum is σ = 44267268864. Its totient is φ = 11757312000.

The previous prime is 23365775957. The next prime is 23365775981. The reversal of 23365775979 is 97957756332.

23365775979 is a `hidden beast` number, since 2 + 3 + 3 + 6 + 577 + 59 + 7 + 9 = 666.

It is not a de Polignac number, because 23365775979 - 2¹¹ = 23365773931 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (23365775999) 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 143 ways as a sum of consecutive naturals, for example, 12972879 + ... + 12974679.

Almost surely, 2^23365775979 is an apocalyptic number.

23365775979 is a deficient number, since it is larger than the sum of its proper divisors (20901492885).

23365775979 is a wasteful number, since it uses less digits than its factorization.

23365775979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938 (or 1928 counting only the distinct ones).

The product of its digits is 75014100, while the sum is 63.

The spelling of 23365775979 in words is "twenty-three billion, three hundred sixty-five million, seven hundred seventy-five thousand, nine hundred seventy-nine".