90502690879 has 2 divisors, whose sum is σ = 90502690880. Its totient is φ = 90502690878.

The previous prime is 90502690843. The next prime is 90502690909. The reversal of 90502690879 is 97809620509.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 90502690879 - 2¹⁹ = 90502166591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90502691879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45251345439 + 45251345440.

It is an arithmetic number, because the mean of its divisors is an integer number (45251345440).

Almost surely, 2^90502690879 is an apocalyptic number.

90502690879 is a deficient number, since it is larger than the sum of its proper divisors (1).

90502690879 is an equidigital number, since it uses as much as digits as its factorization.

90502690879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2449440, while the sum is 55.

The spelling of 90502690879 in words is "ninety billion, five hundred two million, six hundred ninety thousand, eight hundred seventy-nine".