23642978959 has 4 divisors (see below), whose sum is σ = 24030568840. Its totient is φ = 23255389080.

The previous prime is 23642978923. The next prime is 23642978977. The reversal of 23642978959 is 95987924632.

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

It is a cyclic number.

It is not a de Polignac number, because 23642978959 - 2¹¹ = 23642976911 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23642978959.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23642378959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 193794849 + ... + 193794970.

It is an arithmetic number, because the mean of its divisors is an integer number (6007642210).

Almost surely, 2^23642978959 is an apocalyptic number.

23642978959 is a deficient number, since it is larger than the sum of its proper divisors (387589881).

23642978959 is an equidigital number, since it uses as much as digits as its factorization.

23642978959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387589880.

The product of its digits is 58786560, while the sum is 64.

The spelling of 23642978959 in words is "twenty-three billion, six hundred forty-two million, nine hundred seventy-eight thousand, nine hundred fifty-nine".