23463643491 has 40 divisors (see below), whose sum is σ = 37307153664. Its totient is φ = 14645041920.

The previous prime is 23463643487. The next prime is 23463643513. The reversal of 23463643491 is 19434636432.

23463643491 is a `hidden beast` number, since 2 + 3 + 4 + 636 + 4 + 3 + 4 + 9 + 1 = 666.

It is not a de Polignac number, because 23463643491 - 2² = 23463643487 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (23463643691) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 218401 + ... + 307613.

Almost surely, 2^23463643491 is an apocalyptic number.

23463643491 is a deficient number, since it is larger than the sum of its proper divisors (13843510173).

23463643491 is a wasteful number, since it uses less digits than its factorization.

23463643491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89433 (or 89424 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 45.

The spelling of 23463643491 in words is "twenty-three billion, four hundred sixty-three million, six hundred forty-three thousand, four hundred ninety-one".