23154640794 has 12 divisors (see below), whose sum is σ = 50168388426. Its totient is φ = 7718213592.

The previous prime is 23154640763. The next prime is 23154640813. The reversal of 23154640794 is 49704645132.

23154640794 is a `hidden beast` number, since 2 + 3 + 154 + 6 + 407 + 94 = 666.

It can be written as a sum of positive squares in only one way, i.e., 18127121769 + 5027519025 = 134637^2 + 70905^2 .

It is a super-2 number, since 2×23154640794² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 643184449 + ... + 643184484.

Almost surely, 2^23154640794 is an apocalyptic number.

23154640794 is an abundant number, since it is smaller than the sum of its proper divisors (27013747632).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23154640794 is a wasteful number, since it uses less digits than its factorization.

23154640794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286368941 (or 1286368938 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 45.

The spelling of 23154640794 in words is "twenty-three billion, one hundred fifty-four million, six hundred forty thousand, seven hundred ninety-four".