23643635051 has 4 divisors (see below), whose sum is σ = 23785213872. Its totient is φ = 23502056232.

The previous prime is 23643635027. The next prime is 23643635063. The reversal of 23643635051 is 15053634632.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23643635051 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23643634996 and 23643635014.

It is not an unprimeable number, because it can be changed into a prime (23643655051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70789160 + ... + 70789493.

It is an arithmetic number, because the mean of its divisors is an integer number (5946303468).

Almost surely, 2^23643635051 is an apocalyptic number.

23643635051 is a deficient number, since it is larger than the sum of its proper divisors (141578821).

23643635051 is a wasteful number, since it uses less digits than its factorization.

23643635051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141578820.

The product of its (nonzero) digits is 194400, while the sum is 38.

The spelling of 23643635051 in words is "twenty-three billion, six hundred forty-three million, six hundred thirty-five thousand, fifty-one".