632642618280 has 128 divisors (see below), whose sum is σ = 1938897492480. Its totient is φ = 165065134080.

The previous prime is 632642618189. The next prime is 632642618297. The reversal of 632642618280 is 82816246236.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20835910 + ... + 20866250.

It is an arithmetic number, because the mean of its divisors is an integer number (15147636660).

Almost surely, 2^632642618280 is an apocalyptic number.

632642618280 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 632642618280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (969448746240).

632642618280 is an abundant number, since it is smaller than the sum of its proper divisors (1306254874200).

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

632642618280 is a wasteful number, since it uses less digits than its factorization.

632642618280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34099 (or 34095 counting only the distinct ones).

The product of its (nonzero) digits is 1327104, while the sum is 48.

The spelling of 632642618280 in words is "six hundred thirty-two billion, six hundred forty-two million, six hundred eighteen thousand, two hundred eighty".