5172566780 has 12 divisors (see below), whose sum is σ = 10862390280. Its totient is φ = 2069026704.

The previous prime is 5172566753. The next prime is 5172566803. The reversal of 5172566780 is 876652715.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 129314150 + ... + 129314189.

It is an arithmetic number, because the mean of its divisors is an integer number (905199190).

Almost surely, 2^5172566780 is an apocalyptic number.

It is an amenable number.

5172566780 is an abundant number, since it is smaller than the sum of its proper divisors (5689823500).

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

5172566780 is a wasteful number, since it uses less digits than its factorization.

5172566780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258628348 (or 258628346 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 47.

The square root of 5172566780 is about 71920.5588131794. The cubic root of 5172566780 is about 1729.4262055122.

The spelling of 5172566780 in words is "five billion, one hundred seventy-two million, five hundred sixty-six thousand, seven hundred eighty".