978534396484 has 48 divisors (see below), whose sum is σ = 1875911788800. Its totient is φ = 444555270656.

The previous prime is 978534396461. The next prime is 978534396523. The reversal of 978534396484 is 484693435879.

978534396484 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×978534396484² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20135487 + ... + 20184025.

It is an arithmetic number, because the mean of its divisors is an integer number (39081495600).

Almost surely, 2^978534396484 is an apocalyptic number.

It is an amenable number.

978534396484 is a deficient number, since it is larger than the sum of its proper divisors (897377392316).

978534396484 is a wasteful number, since it uses less digits than its factorization.

978534396484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58812 (or 58810 counting only the distinct ones).

The product of its digits is 627056640, while the sum is 70.

The spelling of 978534396484 in words is "nine hundred seventy-eight billion, five hundred thirty-four million, three hundred ninety-six thousand, four hundred eighty-four".