978688348925 has 48 divisors (see below), whose sum is σ = 1400562358272. Its totient is φ = 664540363200.

The previous prime is 978688348861. The next prime is 978688348961. The reversal of 978688348925 is 529843886879.

It is not a de Polignac number, because 978688348925 - 2⁶ = 978688348861 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 7622510 + ... + 7749840.

It is an arithmetic number, because the mean of its divisors is an integer number (29178382464).

Almost surely, 2^978688348925 is an apocalyptic number.

It is an amenable number.

978688348925 is a deficient number, since it is larger than the sum of its proper divisors (421874009347).

978688348925 is a wasteful number, since it uses less digits than its factorization.

978688348925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127778 (or 127773 counting only the distinct ones).

The product of its digits is 1672151040, while the sum is 77.

The spelling of 978688348925 in words is "nine hundred seventy-eight billion, six hundred eighty-eight million, three hundred forty-eight thousand, nine hundred twenty-five".