978200215268 has 12 divisors (see below), whose sum is σ = 1711974853680. Its totient is φ = 489064542792.

The previous prime is 978200215211. The next prime is 978200215297. The reversal of 978200215268 is 862512002879.

It is a super-2 number, since 2×978200215268² (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 3 ways as a sum of consecutive naturals, for example, 8829278 + ... + 8939381.

It is an arithmetic number, because the mean of its divisors is an integer number (142664571140).

Almost surely, 2^978200215268 is an apocalyptic number.

It is an amenable number.

978200215268 is a deficient number, since it is larger than the sum of its proper divisors (733774638412).

978200215268 is a wasteful number, since it uses less digits than its factorization.

978200215268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17782426 (or 17782424 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 50.

The spelling of 978200215268 in words is "nine hundred seventy-eight billion, two hundred million, two hundred fifteen thousand, two hundred sixty-eight".