90804471022985 has 16 divisors (see below), whose sum is σ = 113469300195840. Its totient is φ = 69674131665600.

The previous prime is 90804471022943. The next prime is 90804471023053. The reversal of 90804471022985 is 58922017440809.

It is not a de Polignac number, because 90804471022985 - 2⁸ = 90804471022729 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 2073612977 + ... + 2073656766.

It is an arithmetic number, because the mean of its divisors is an integer number (7091831262240).

Almost surely, 2^{90804471022985} is an apocalyptic number.

It is an amenable number.

90804471022985 is a deficient number, since it is larger than the sum of its proper divisors (22664829172855).

90804471022985 is a wasteful number, since it uses less digits than its factorization.

90804471022985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4147269928.

The product of its (nonzero) digits is 11612160, while the sum is 59.

Adding to 90804471022985 its sum of digits (59), we get a square (90804471023044 = 9529138²).

The spelling of 90804471022985 in words is "ninety trillion, eight hundred four billion, four hundred seventy-one million, twenty-two thousand, nine hundred eighty-five".