90806622356999 has 4 divisors (see below), whose sum is σ = 90806945307936. Its totient is φ = 90806299406064.

The previous prime is 90806622356993. The next prime is 90806622357047. The reversal of 90806622356999 is 99965322660809.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90806622356999 - 2²⁴ = 90806605579783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90806622356993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 161053334 + ... + 161616179.

It is an arithmetic number, because the mean of its divisors is an integer number (22701736326984).

Almost surely, 2^{90806622356999} is an apocalyptic number.

90806622356999 is a deficient number, since it is larger than the sum of its proper divisors (322950937).

90806622356999 is a wasteful number, since it uses less digits than its factorization.

90806622356999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322950936.

The product of its (nonzero) digits is 680244480, while the sum is 74.

The spelling of 90806622356999 in words is "ninety trillion, eight hundred six billion, six hundred twenty-two million, three hundred fifty-six thousand, nine hundred ninety-nine".