89875567549 has 2 divisors, whose sum is σ = 89875567550. Its totient is φ = 89875567548.

The previous prime is 89875567543. The next prime is 89875567553. The reversal of 89875567549 is 94576557898.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88093208025 + 1782359524 = 296805^2 + 42218^2 .

It is a cyclic number.

It is not a de Polignac number, because 89875567549 - 2⁷ = 89875567421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89875567543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44937783774 + 44937783775.

It is an arithmetic number, because the mean of its divisors is an integer number (44937783775).

Almost surely, 2^89875567549 is an apocalyptic number.

It is an amenable number.

89875567549 is a deficient number, since it is larger than the sum of its proper divisors (1).

89875567549 is an equidigital number, since it uses as much as digits as its factorization.

89875567549 is an evil number, because the sum of its binary digits is even.

The product of its digits is 762048000, while the sum is 73.

The spelling of 89875567549 in words is "eighty-nine billion, eight hundred seventy-five million, five hundred sixty-seven thousand, five hundred forty-nine".