23578487489 has 2 divisors, whose sum is σ = 23578487490. Its totient is φ = 23578487488.

The previous prime is 23578487477. The next prime is 23578487533. The reversal of 23578487489 is 98478487532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23128326400 + 450161089 = 152080^2 + 21217^2 .

It is a cyclic number.

It is not a de Polignac number, because 23578487489 - 2¹⁶ = 23578421953 is a prime.

It is not a weakly prime, because it can be changed into another prime (23578487089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11789243744 + 11789243745.

It is an arithmetic number, because the mean of its divisors is an integer number (11789243745).

Almost surely, 2^23578487489 is an apocalyptic number.

It is an amenable number.

23578487489 is a deficient number, since it is larger than the sum of its proper divisors (1).

23578487489 is an equidigital number, since it uses as much as digits as its factorization.

23578487489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108380160, while the sum is 65.

The spelling of 23578487489 in words is "twenty-three billion, five hundred seventy-eight million, four hundred eighty-seven thousand, four hundred eighty-nine".