637282448420 has 48 divisors (see below), whose sum is σ = 1422828529920. Its totient is φ = 239229234816.

The previous prime is 637282448371. The next prime is 637282448423. The reversal of 637282448420 is 24844282736.

It is a super-2 number, since 2×637282448420² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (637282448423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13045400 + ... + 13094159.

It is an arithmetic number, because the mean of its divisors is an integer number (29642261040).

Almost surely, 2^637282448420 is an apocalyptic number.

It is an amenable number.

637282448420 is an abundant number, since it is smaller than the sum of its proper divisors (785546081500).

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

637282448420 is a wasteful number, since it uses less digits than its factorization.

637282448420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26139644 (or 26139642 counting only the distinct ones).

The product of its (nonzero) digits is 4128768, while the sum is 50.

The spelling of 637282448420 in words is "six hundred thirty-seven billion, two hundred eighty-two million, four hundred forty-eight thousand, four hundred twenty".