23394978368 has 84 divisors (see below), whose sum is σ = 48586968612. Its totient is φ = 11175198720.

The previous prime is 23394978353. The next prime is 23394978371. The reversal of 23394978368 is 86387949332.

It can be written as a sum of positive squares in 6 ways, for example, as 523860544 + 22871117824 = 22888^2 + 151232^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23394978368.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5218688 + ... + 5223168.

It is an arithmetic number, because the mean of its divisors is an integer number (578416293).

Almost surely, 2^23394978368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23394978368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24293484306).

23394978368 is an abundant number, since it is smaller than the sum of its proper divisors (25191990244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23394978368 is an equidigital number, since it uses as much as digits as its factorization.

23394978368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4648 (or 4609 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 62.

The spelling of 23394978368 in words is "twenty-three billion, three hundred ninety-four million, nine hundred seventy-eight thousand, three hundred sixty-eight".