10978319780 has 12 divisors (see below), whose sum is σ = 23054471580. Its totient is φ = 4391327904.

The previous prime is 10978319771. The next prime is 10978319783. The reversal of 10978319780 is 8791387901.

It can be written as a sum of positive squares in 2 ways, for example, as 3473216356 + 7505103424 = 58934^2 + 86632^2 .

It is not an unprimeable number, because it can be changed into a prime (10978319783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274457975 + ... + 274458014.

It is an arithmetic number, because the mean of its divisors is an integer number (1921205965).

Almost surely, 2^10978319780 is an apocalyptic number.

10978319780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10978319780 is an abundant number, since it is smaller than the sum of its proper divisors (12076151800).

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

10978319780 is a wasteful number, since it uses less digits than its factorization.

10978319780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 548915998 (or 548915996 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 53.

The spelling of 10978319780 in words is "ten billion, nine hundred seventy-eight million, three hundred nineteen thousand, seven hundred eighty".