538277980880 has 80 divisors (see below), whose sum is σ = 1326039413760. Its totient is φ = 202504267776.

The previous prime is 538277980861. The next prime is 538277980921. The reversal of 538277980880 is 88089772835.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

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, 1819517 + ... + 2094563.

It is an arithmetic number, because the mean of its divisors is an integer number (16575492672).

Almost surely, 2^538277980880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 538277980880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (663019706880).

538277980880 is an abundant number, since it is smaller than the sum of its proper divisors (787761432880).

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

538277980880 is a wasteful number, since it uses less digits than its factorization.

538277980880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276516 (or 276510 counting only the distinct ones).

The product of its (nonzero) digits is 54190080, while the sum is 65.

The spelling of 538277980880 in words is "five hundred thirty-eight billion, two hundred seventy-seven million, nine hundred eighty thousand, eight hundred eighty".