90981082580 has 12 divisors (see below), whose sum is σ = 191060273460. Its totient is φ = 36392433024.

The previous prime is 90981082571. The next prime is 90981082583. The reversal of 90981082580 is 8528018909.

It can be written as a sum of positive squares in 2 ways, for example, as 37473990724 + 53507091856 = 193582^2 + 231316^2 .

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90981082583) 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 3 ways as a sum of consecutive naturals, for example, 2274527045 + ... + 2274527084.

It is an arithmetic number, because the mean of its divisors is an integer number (15921689455).

Almost surely, 2^90981082580 is an apocalyptic number.

It is an amenable number.

90981082580 is an abundant number, since it is smaller than the sum of its proper divisors (100079190880).

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

90981082580 is a wasteful number, since it uses less digits than its factorization.

90981082580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4549054138 (or 4549054136 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 50.

The spelling of 90981082580 in words is "ninety billion, nine hundred eighty-one million, eighty-two thousand, five hundred eighty".