90097660769 has 2 divisors, whose sum is σ = 90097660770. Its totient is φ = 90097660768.

The previous prime is 90097660759. The next prime is 90097660837. The reversal of 90097660769 is 96706679009.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75526032400 + 14571628369 = 274820^2 + 120713^2 .

It is a cyclic number.

It is not a de Polignac number, because 90097660769 - 2¹⁶ = 90097595233 is a prime.

It is a super-2 number, since 2×90097660769² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (90097660759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45048830384 + 45048830385.

It is an arithmetic number, because the mean of its divisors is an integer number (45048830385).

Almost surely, 2^90097660769 is an apocalyptic number.

It is an amenable number.

90097660769 is a deficient number, since it is larger than the sum of its proper divisors (1).

90097660769 is an equidigital number, since it uses as much as digits as its factorization.

90097660769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7715736, while the sum is 59.

The spelling of 90097660769 in words is "ninety billion, ninety-seven million, six hundred sixty thousand, seven hundred sixty-nine".