90815485448 has 32 divisors (see below), whose sum is σ = 179263800000. Its totient is φ = 43012411200.

The previous prime is 90815485421. The next prime is 90815485451. The reversal of 90815485448 is 84458451809.

It is a junction number, because it is equal to n+sod(n) for n = 90815485393 and 90815485402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1327178 + ... + 1393926.

It is an arithmetic number, because the mean of its divisors is an integer number (5601993750).

Almost surely, 2^90815485448 is an apocalyptic number.

It is an amenable number.

90815485448 is a deficient number, since it is larger than the sum of its proper divisors (88448314552).

90815485448 is a wasteful number, since it uses less digits than its factorization.

90815485448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75725 (or 75721 counting only the distinct ones).

The product of its (nonzero) digits is 7372800, while the sum is 56.

The spelling of 90815485448 in words is "ninety billion, eight hundred fifteen million, four hundred eighty-five thousand, four hundred forty-eight".