90626082689 has 2 divisors, whose sum is σ = 90626082690. Its totient is φ = 90626082688.

The previous prime is 90626082671. The next prime is 90626082727. The reversal of 90626082689 is 98628062609.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89764953664 + 861129025 = 299608^2 + 29345^2 .

It is an emirp because it is prime and its reverse (98628062609) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90626082689 is a prime.

It is not a weakly prime, because it can be changed into another prime (90626082089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45313041344 + 45313041345.

It is an arithmetic number, because the mean of its divisors is an integer number (45313041345).

Almost surely, 2^90626082689 is an apocalyptic number.

It is an amenable number.

90626082689 is a deficient number, since it is larger than the sum of its proper divisors (1).

90626082689 is an equidigital number, since it uses as much as digits as its factorization.

90626082689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4478976, while the sum is 56.

The spelling of 90626082689 in words is "ninety billion, six hundred twenty-six million, eighty-two thousand, six hundred eighty-nine".