90708899579 has 2 divisors, whose sum is σ = 90708899580. Its totient is φ = 90708899578.

The previous prime is 90708899573. The next prime is 90708899657. The reversal of 90708899579 is 97599880709.

It is a weak prime.

It is an emirp because it is prime and its reverse (97599880709) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90708899579 - 2²⁸ = 90440464123 is a prime.

It is a super-3 number, since 3×90708899579³ (a number of 34 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (90708899573) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45354449789 + 45354449790.

It is an arithmetic number, because the mean of its divisors is an integer number (45354449790).

Almost surely, 2^90708899579 is an apocalyptic number.

90708899579 is a deficient number, since it is larger than the sum of its proper divisors (1).

90708899579 is an equidigital number, since it uses as much as digits as its factorization.

90708899579 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 102876480, while the sum is 71.

The spelling of 90708899579 in words is "ninety billion, seven hundred eight million, eight hundred ninety-nine thousand, five hundred seventy-nine".