978527817372 has 96 divisors (see below), whose sum is σ = 2643986974720. Its totient is φ = 275878586880.

The previous prime is 978527817347. The next prime is 978527817373. The reversal of 978527817372 is 273718725879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978527817373) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11510928 + ... + 11595624.

Almost surely, 2^978527817372 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 978527817372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1321993487360).

978527817372 is an abundant number, since it is smaller than the sum of its proper divisors (1665459157348).

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

978527817372 is a wasteful number, since it uses less digits than its factorization.

978527817372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86531 (or 86529 counting only the distinct ones).

The product of its digits is 82978560, while the sum is 66.

The spelling of 978527817372 in words is "nine hundred seventy-eight billion, five hundred twenty-seven million, eight hundred seventeen thousand, three hundred seventy-two".