8856641575489 has 2 divisors, whose sum is σ = 8856641575490. Its totient is φ = 8856641575488.

The previous prime is 8856641575471. The next prime is 8856641575583. The reversal of 8856641575489 is 9845751466588.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5016668203264 + 3839973372225 = 2239792^2 + 1959585^2 .

It is a cyclic number.

It is not a de Polignac number, because 8856641575489 - 2²³ = 8856633186881 is a prime.

It is not a weakly prime, because it can be changed into another prime (8856641575409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4428320787744 + 4428320787745.

It is an arithmetic number, because the mean of its divisors is an integer number (4428320787745).

Almost surely, 2^{8856641575489} is an apocalyptic number.

It is an amenable number.

8856641575489 is a deficient number, since it is larger than the sum of its proper divisors (1).

8856641575489 is an equidigital number, since it uses as much as digits as its factorization.

8856641575489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432000, while the sum is 76.

The spelling of 8856641575489 in words is "eight trillion, eight hundred fifty-six billion, six hundred forty-one million, five hundred seventy-five thousand, four hundred eighty-nine".