23578401365 has 4 divisors (see below), whose sum is σ = 28294081644. Its totient is φ = 18862721088.

The previous prime is 23578401359. The next prime is 23578401403. The reversal of 23578401365 is 56310487532.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14548460689 + 9029940676 = 120617^2 + 95026^2 .

It is a cyclic number.

It is not a de Polignac number, because 23578401365 - 2⁸ = 23578401109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2357840132 + ... + 2357840141.

It is an arithmetic number, because the mean of its divisors is an integer number (7073520411).

Almost surely, 2^23578401365 is an apocalyptic number.

It is an amenable number.

23578401365 is a deficient number, since it is larger than the sum of its proper divisors (4715680279).

23578401365 is an equidigital number, since it uses as much as digits as its factorization.

23578401365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4715680278.

The product of its (nonzero) digits is 604800, while the sum is 44.

Adding to 23578401365 its reverse (56310487532), we get a palindrome (79888888897).

The spelling of 23578401365 in words is "twenty-three billion, five hundred seventy-eight million, four hundred one thousand, three hundred sixty-five".