637049807716 has 81 divisors (see below), whose sum is σ = 1326124312569. Its totient is φ = 266992090848.

The previous prime is 637049807699. The next prime is 637049807761. The reversal of 637049807716 is 617708940736.

The square root of 637049807716 is 798154.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 25988664100 + 611061143616 = 161210^2 + 781704^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 525184726 + ... + 525185938.

Almost surely, 2^637049807716 is an apocalyptic number.

637049807716 is the 798154-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 637049807716

637049807716 is an abundant number, since it is smaller than the sum of its proper divisors (689074504853).

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

637049807716 is an equidigital number, since it uses as much as digits as its factorization.

637049807716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2538 (or 1269 counting only the distinct ones).

The product of its (nonzero) digits is 10668672, while the sum is 58.

The spelling of 637049807716 in words is "six hundred thirty-seven billion, forty-nine million, eight hundred seven thousand, seven hundred sixteen".