23405194791 has 12 divisors (see below), whose sum is σ = 36880913160. Its totient is φ = 14184966480.

The previous prime is 23405194759. The next prime is 23405194847. The reversal of 23405194791 is 19749150432.

23405194791 is a `hidden beast` number, since 2 + 3 + 4 + 0 + 519 + 47 + 91 = 666.

It is not a de Polignac number, because 23405194791 - 2⁵ = 23405194759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23405194741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118207956 + ... + 118208153.

It is an arithmetic number, because the mean of its divisors is an integer number (3073409430).

Almost surely, 2^23405194791 is an apocalyptic number.

23405194791 is a deficient number, since it is larger than the sum of its proper divisors (13475718369).

23405194791 is a wasteful number, since it uses less digits than its factorization.

23405194791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236416126 (or 236416123 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The spelling of 23405194791 in words is "twenty-three billion, four hundred five million, one hundred ninety-four thousand, seven hundred ninety-one".