23387478329 has 2 divisors, whose sum is σ = 23387478330. Its totient is φ = 23387478328.

The previous prime is 23387478319. The next prime is 23387478349. The reversal of 23387478329 is 92387478332.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13151502400 + 10235975929 = 114680^2 + 101173^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23387478329 is a prime.

It is not a weakly prime, because it can be changed into another prime (23387478319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11693739164 + 11693739165.

It is an arithmetic number, because the mean of its divisors is an integer number (11693739165).

Almost surely, 2^23387478329 is an apocalyptic number.

It is an amenable number.

23387478329 is a deficient number, since it is larger than the sum of its proper divisors (1).

23387478329 is an equidigital number, since it uses as much as digits as its factorization.

23387478329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12192768, while the sum is 56.

The spelling of 23387478329 in words is "twenty-three billion, three hundred eighty-seven million, four hundred seventy-eight thousand, three hundred twenty-nine".