80954582985 has 24 divisors (see below), whose sum is σ = 140331736584. Its totient is φ = 43172559360.

The previous prime is 80954582983. The next prime is 80954582999. The reversal of 80954582985 is 58928545908.

80954582985 is a `hidden beast` number, since 8 + 0 + 9 + 545 + 8 + 2 + 9 + 85 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1245456 + 80953337529 = 1116^2 + 284523^2 .

It is not a de Polignac number, because 80954582985 - 2¹ = 80954582983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (80954582983) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 620959 + ... + 739931.

It is an arithmetic number, because the mean of its divisors is an integer number (5847155691).

Almost surely, 2^80954582985 is an apocalyptic number.

It is an amenable number.

80954582985 is a deficient number, since it is larger than the sum of its proper divisors (59377153599).

80954582985 is a wasteful number, since it uses less digits than its factorization.

80954582985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134105 (or 134102 counting only the distinct ones).

The product of its (nonzero) digits is 41472000, while the sum is 63.

The spelling of 80954582985 in words is "eighty billion, nine hundred fifty-four million, five hundred eighty-two thousand, nine hundred eighty-five".