23578487477 has 2 divisors, whose sum is σ = 23578487478. Its totient is φ = 23578487476.

The previous prime is 23578487423. The next prime is 23578487489. The reversal of 23578487477 is 77478487532.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20978915281 + 2599572196 = 144841^2 + 50986^2 .

It is a cyclic number.

It is not a de Polignac number, because 23578487477 - 2⁸ = 23578487221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23578487407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11789243738 + 11789243739.

It is an arithmetic number, because the mean of its divisors is an integer number (11789243739).

Almost surely, 2^23578487477 is an apocalyptic number.

It is an amenable number.

23578487477 is a deficient number, since it is larger than the sum of its proper divisors (1).

23578487477 is an equidigital number, since it uses as much as digits as its factorization.

23578487477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73758720, while the sum is 62.

The spelling of 23578487477 in words is "twenty-three billion, five hundred seventy-eight million, four hundred eighty-seven thousand, four hundred seventy-seven".