90773220069 has 24 divisors (see below), whose sum is σ = 151531548480. Its totient is φ = 51287594688.

The previous prime is 90773220061. The next prime is 90773220071. The reversal of 90773220069 is 96002237709.

It is a happy number.

It is not a de Polignac number, because 90773220069 - 2³ = 90773220061 is a prime.

It is a super-2 number, since 2×90773220069² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90773220061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8089027 + ... + 8100240.

It is an arithmetic number, because the mean of its divisors is an integer number (6313814520).

Almost surely, 2^90773220069 is an apocalyptic number.

It is an amenable number.

90773220069 is a deficient number, since it is larger than the sum of its proper divisors (60758328411).

90773220069 is a wasteful number, since it uses less digits than its factorization.

90773220069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16189369 (or 16189366 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The spelling of 90773220069 in words is "ninety billion, seven hundred seventy-three million, two hundred twenty thousand, sixty-nine".