23929307643 has 4 divisors (see below), whose sum is σ = 31905743528. Its totient is φ = 15952871760.

The previous prime is 23929307641. The next prime is 23929307659. The reversal of 23929307643 is 34670392932.

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

It is not a de Polignac number, because 23929307643 - 2¹ = 23929307641 is a prime.

It is a super-2 number, since 2×23929307643² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23929307592 and 23929307601.

It is not an unprimeable number, because it can be changed into a prime (23929307641) 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, 3988217938 + ... + 3988217943.

It is an arithmetic number, because the mean of its divisors is an integer number (7976435882).

Almost surely, 2^23929307643 is an apocalyptic number.

23929307643 is a deficient number, since it is larger than the sum of its proper divisors (7976435885).

23929307643 is an equidigital number, since it uses as much as digits as its factorization.

23929307643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7976435884.

The product of its (nonzero) digits is 1469664, while the sum is 48.

The spelling of 23929307643 in words is "twenty-three billion, nine hundred twenty-nine million, three hundred seven thousand, six hundred forty-three".