500055002778 has 16 divisors (see below), whose sum is σ = 1006098690240. Its totient is φ = 165686886816.

The previous prime is 500055002663. The next prime is 500055002801. The reversal of 500055002778 is 877200550005.

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, 249527443 + ... + 249529446.

It is an arithmetic number, because the mean of its divisors is an integer number (62881168140).

Almost surely, 2^500055002778 is an apocalyptic number.

500055002778 is an abundant number, since it is smaller than the sum of its proper divisors (506043687462).

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

500055002778 is a wasteful number, since it uses less digits than its factorization.

500055002778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499057061.

The product of its (nonzero) digits is 98000, while the sum is 39.

The spelling of 500055002778 in words is "five hundred billion, fifty-five million, two thousand, seven hundred seventy-eight".