23515605479 has 2 divisors, whose sum is σ = 23515605480. Its totient is φ = 23515605478.

The previous prime is 23515605433. The next prime is 23515605511. The reversal of 23515605479 is 97450651532.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23515605479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23515605409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11757802739 + 11757802740.

It is an arithmetic number, because the mean of its divisors is an integer number (11757802740).

Almost surely, 2^23515605479 is an apocalyptic number.

23515605479 is a deficient number, since it is larger than the sum of its proper divisors (1).

23515605479 is an equidigital number, since it uses as much as digits as its factorization.

23515605479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1134000, while the sum is 47.

The spelling of 23515605479 in words is "twenty-three billion, five hundred fifteen million, six hundred five thousand, four hundred seventy-nine".