99902294585 has 4 divisors (see below), whose sum is σ = 119882753508. Its totient is φ = 79921835664.

The previous prime is 99902294567. The next prime is 99902294623. The reversal of 99902294585 is 58549220999.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58549220999 = 53 ⋅1104702283.

It can be written as a sum of positive squares in 2 ways, for example, as 51070576144 + 48831718441 = 225988^2 + 220979^2 .

It is a cyclic number.

It is not a de Polignac number, because 99902294585 - 2¹⁸ = 99902032441 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9990229454 + ... + 9990229463.

It is an arithmetic number, because the mean of its divisors is an integer number (29970688377).

Almost surely, 2^99902294585 is an apocalyptic number.

It is an amenable number.

99902294585 is a deficient number, since it is larger than the sum of its proper divisors (19980458923).

99902294585 is a wasteful number, since it uses less digits than its factorization.

99902294585 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19980458922.

The product of its (nonzero) digits is 20995200, while the sum is 62.

The spelling of 99902294585 in words is "ninety-nine billion, nine hundred two million, two hundred ninety-four thousand, five hundred eighty-five".