90305223560 has 16 divisors (see below), whose sum is σ = 203186753100. Its totient is φ = 36122089408.

The previous prime is 90305223551. The next prime is 90305223571. The reversal of 90305223560 is 6532250309.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 90135651076 + 169572484 = 300226^2 + 13022^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 90305223560.

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, 1128815255 + ... + 1128815334.

Almost surely, 2^90305223560 is an apocalyptic number.

It is an amenable number.

90305223560 is an abundant number, since it is smaller than the sum of its proper divisors (112881529540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90305223560 is a wasteful number, since it uses less digits than its factorization.

90305223560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257630600 (or 2257630596 counting only the distinct ones).

The product of its (nonzero) digits is 48600, while the sum is 35.

Adding to 90305223560 its reverse (6532250309), we get a palindrome (96837473869).

The spelling of 90305223560 in words is "ninety billion, three hundred five million, two hundred twenty-three thousand, five hundred sixty".