635857425480 has 256 divisors, whose sum is σ = 1993144320000. Its totient is φ = 162081274880.

The previous prime is 635857425457. The next prime is 635857425499. The reversal of 635857425480 is 84524758536.

It is a self number, because there is not a number n which added to its sum of digits gives 635857425480.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 148875745 + ... + 148880015.

It is an arithmetic number, because the mean of its divisors is an integer number (7785720000).

Almost surely, 2^635857425480 is an apocalyptic number.

635857425480 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 635857425480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (996572160000).

635857425480 is an abundant number, since it is smaller than the sum of its proper divisors (1357286894520).

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

635857425480 is a wasteful number, since it uses less digits than its factorization.

635857425480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4732 (or 4728 counting only the distinct ones).

The product of its (nonzero) digits is 32256000, while the sum is 57.

The spelling of 635857425480 in words is "six hundred thirty-five billion, eight hundred fifty-seven million, four hundred twenty-five thousand, four hundred eighty".