978291693264 has 80 divisors (see below), whose sum is σ = 2676455749440. Its totient is φ = 306853079040.

The previous prime is 978291693263. The next prime is 978291693271. The reversal of 978291693264 is 462396192879.

It is a junction number, because it is equal to n+sod(n) for n = 978291693195 and 978291693204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (978291693263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4009654 + ... + 4246634.

It is an arithmetic number, because the mean of its divisors is an integer number (33455696868).

Almost surely, 2^978291693264 is an apocalyptic number.

It is an amenable number.

978291693264 is an abundant number, since it is smaller than the sum of its proper divisors (1698164056176).

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

978291693264 is a wasteful number, since it uses less digits than its factorization.

978291693264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242068 (or 242062 counting only the distinct ones).

The product of its digits is 70543872, while the sum is 66.

The spelling of 978291693264 in words is "nine hundred seventy-eight billion, two hundred ninety-one million, six hundred ninety-three thousand, two hundred sixty-four".