981515329792 has 144 divisors (see below), whose sum is σ = 2131300057600. Its totient is φ = 449410498560.

The previous prime is 981515329777. The next prime is 981515329889. The reversal of 981515329792 is 297923515189.

It is a self number, because there is not a number n which added to its sum of digits gives 981515329792.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 150328384 + ... + 150334912.

Almost surely, 2^981515329792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 981515329792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1065650028800).

981515329792 is an abundant number, since it is smaller than the sum of its proper divisors (1149784727808).

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

981515329792 is a wasteful number, since it uses less digits than its factorization.

981515329792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7592 (or 7578 counting only the distinct ones).

The product of its digits is 12247200, while the sum is 61.

The spelling of 981515329792 in words is "nine hundred eighty-one billion, five hundred fifteen million, three hundred twenty-nine thousand, seven hundred ninety-two".