5278626978 has 32 divisors (see below), whose sum is σ = 10849462080. Its totient is φ = 1710901440.

The previous prime is 5278626961. The next prime is 5278627027. The reversal of 5278626978 is 8796268725.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 390513 + ... + 403803.

It is an arithmetic number, because the mean of its divisors is an integer number (339045690).

Almost surely, 2^5278626978 is an apocalyptic number.

5278626978 is an abundant number, since it is smaller than the sum of its proper divisors (5570835102).

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

5278626978 is a wasteful number, since it uses less digits than its factorization.

5278626978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15122.

The product of its digits is 20321280, while the sum is 60.

The square root of 5278626978 is about 72654.1600873618. The cubic root of 5278626978 is about 1741.1665865579.

The spelling of 5278626978 in words is "five billion, two hundred seventy-eight million, six hundred twenty-six thousand, nine hundred seventy-eight".