981481580500 has 24 divisors (see below), whose sum is σ = 2143555772904.
Its totient is φ = 392592632000.
The previous prime is 981481580483. The next prime is 981481580501. The reversal of 981481580500 is 5085184189.
981481580500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It can be written as a sum of positive squares in 4 ways, for example, as 127080842256 + 854400738244 = 356484^2 + 924338^2
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (981481580501) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 981481081 + ... + 981482080.
It is an arithmetic number, because the mean of its divisors is an integer number (89314823871).
Almost surely, 2981481580500 is an apocalyptic number.
It is an amenable number.
981481580500 is an abundant number, since it is smaller than the sum of its proper divisors (1162074192404).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
981481580500 is a wasteful number, since it uses less digits than its factorization.
981481580500 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1962963180 (or 1962963168 counting only the distinct ones).
The product of its (nonzero) digits is 460800, while the sum is 49.
The spelling of 981481580500 in words is "nine hundred eighty-one billion, four hundred eighty-one million, five hundred eighty thousand, five hundred".