978181955202 has 16 divisors (see below), whose sum is σ = 1974312204480. Its totient is φ = 323069269392.

The previous prime is 978181955197. The next prime is 978181955239. The reversal of 978181955202 is 202559181879.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 747844878 + ... + 747846185.

It is an arithmetic number, because the mean of its divisors is an integer number (123394512780).

Almost surely, 2^978181955202 is an apocalyptic number.

978181955202 is an abundant number, since it is smaller than the sum of its proper divisors (996130249278).

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

978181955202 is a wasteful number, since it uses less digits than its factorization.

978181955202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1495691177.

The product of its (nonzero) digits is 3628800, while the sum is 57.

The spelling of 978181955202 in words is "nine hundred seventy-eight billion, one hundred eighty-one million, nine hundred fifty-five thousand, two hundred two".