10971784478278 has 16 divisors (see below), whose sum is σ = 18656475631920. Its totient is φ = 4797379447776.

The previous prime is 10971784478257. The next prime is 10971784478323. The reversal of 10971784478278 is 87287448717901.

It is a self number, because there is not a number n which added to its sum of digits gives 10971784478278.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11105044525 + ... + 11105045512.

It is an arithmetic number, because the mean of its divisors is an integer number (1166029726995).

Almost surely, 2^{10971784478278} is an apocalyptic number.

10971784478278 is a deficient number, since it is larger than the sum of its proper divisors (7684691153642).

10971784478278 is a wasteful number, since it uses less digits than its factorization.

10971784478278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22210090071.

The product of its (nonzero) digits is 354041856, while the sum is 73.

The spelling of 10971784478278 in words is "ten trillion, nine hundred seventy-one billion, seven hundred eighty-four million, four hundred seventy-eight thousand, two hundred seventy-eight".