90877516757 has 2 divisors, whose sum is σ = 90877516758. Its totient is φ = 90877516756.

The previous prime is 90877516753. The next prime is 90877516931. The reversal of 90877516757 is 75761577809.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88046319076 + 2831197681 = 296726^2 + 53209^2 .

It is a cyclic number.

It is not a de Polignac number, because 90877516757 - 2² = 90877516753 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90877516757.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90877516753) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45438758378 + 45438758379.

It is an arithmetic number, because the mean of its divisors is an integer number (45438758379).

Almost surely, 2^90877516757 is an apocalyptic number.

It is an amenable number.

90877516757 is a deficient number, since it is larger than the sum of its proper divisors (1).

90877516757 is an equidigital number, since it uses as much as digits as its factorization.

90877516757 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25930800, while the sum is 62.

The spelling of 90877516757 in words is "ninety billion, eight hundred seventy-seven million, five hundred sixteen thousand, seven hundred fifty-seven".