90804471023044 has 81 divisors (see below), whose sum is σ = 165078225227853. Its totient is φ = 43704438523200.

The previous prime is 90804471022943. The next prime is 90804471023053. The reversal of 90804471023044 is 44032017440809.

The square root of 90804471023044 is 9529138.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 4375468264644 + 86429002758400 = 2091762^2 + 9296720^2 .

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90804471022985 and 90804471023003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 61729755229 + ... + 61729756699.

Almost surely, 2^{90804471023044} is an apocalyptic number.

90804471023044 is the 9529138-th square number.

It is an amenable number.

90804471023044 is a deficient number, since it is larger than the sum of its proper divisors (74273754204809).

90804471023044 is an frugal number, since it uses more digits than its factorization.

90804471023044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3186 (or 1593 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 46.

The spelling of 90804471023044 in words is "ninety trillion, eight hundred four billion, four hundred seventy-one million, twenty-three thousand, forty-four".