23258291978 has 8 divisors (see below), whose sum is σ = 36404283168. Its totient is φ = 11123530924.

The previous prime is 23258291977. The next prime is 23258292007. The reversal of 23258291978 is 87919285232.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23258291977) 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, 252807476 + ... + 252807567.

It is an arithmetic number, because the mean of its divisors is an integer number (4550535396).

Almost surely, 2^23258291978 is an apocalyptic number.

23258291978 is a deficient number, since it is larger than the sum of its proper divisors (13145991190).

23258291978 is a wasteful number, since it uses less digits than its factorization.

23258291978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505615068.

The product of its digits is 4354560, while the sum is 56.

The spelling of 23258291978 in words is "twenty-three billion, two hundred fifty-eight million, two hundred ninety-one thousand, nine hundred seventy-eight".