90697950017 has 2 divisors, whose sum is σ = 90697950018. Its totient is φ = 90697950016.

The previous prime is 90697950001. The next prime is 90697950089. The reversal of 90697950017 is 71005979609.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75449651761 + 15248298256 = 274681^2 + 123484^2 .

It is an emirp because it is prime and its reverse (71005979609) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90697950017 - 2⁴ = 90697950001 is a prime.

It is a super-2 number, since 2×90697950017² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90690950017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45348975008 + 45348975009.

It is an arithmetic number, because the mean of its divisors is an integer number (45348975009).

Almost surely, 2^90697950017 is an apocalyptic number.

It is an amenable number.

90697950017 is a deficient number, since it is larger than the sum of its proper divisors (1).

90697950017 is an equidigital number, since it uses as much as digits as its factorization.

90697950017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1071630, while the sum is 53.

The spelling of 90697950017 in words is "ninety billion, six hundred ninety-seven million, nine hundred fifty thousand, seventeen".