89615448761 has 2 divisors, whose sum is σ = 89615448762. Its totient is φ = 89615448760.

The previous prime is 89615448739. The next prime is 89615448763. The reversal of 89615448761 is 16784451698.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63494424361 + 26121024400 = 251981^2 + 161620^2 .

It is a cyclic number.

It is not a de Polignac number, because 89615448761 - 2²² = 89611254457 is a prime.

It is a Sophie Germain prime.

Together with 89615448763, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 89615448761.

It is not a weakly prime, because it can be changed into another prime (89615448763) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44807724380 + 44807724381.

It is an arithmetic number, because the mean of its divisors is an integer number (44807724381).

Almost surely, 2^89615448761 is an apocalyptic number.

It is an amenable number.

89615448761 is a deficient number, since it is larger than the sum of its proper divisors (1).

89615448761 is an equidigital number, since it uses as much as digits as its factorization.

89615448761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11612160, while the sum is 59.

The spelling of 89615448761 in words is "eighty-nine billion, six hundred fifteen million, four hundred forty-eight thousand, seven hundred sixty-one".