90826692613 has 2 divisors, whose sum is σ = 90826692614. Its totient is φ = 90826692612.

The previous prime is 90826692529. The next prime is 90826692623. The reversal of 90826692613 is 31629662809.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54703128769 + 36123563844 = 233887^2 + 190062^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90826692613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90826692623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45413346306 + 45413346307.

It is an arithmetic number, because the mean of its divisors is an integer number (45413346307).

Almost surely, 2^90826692613 is an apocalyptic number.

It is an amenable number.

90826692613 is a deficient number, since it is larger than the sum of its proper divisors (1).

90826692613 is an equidigital number, since it uses as much as digits as its factorization.

90826692613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1679616, while the sum is 52.

The spelling of 90826692613 in words is "ninety billion, eight hundred twenty-six million, six hundred ninety-two thousand, six hundred thirteen".