637021074496 has 21 divisors (see below), whose sum is σ = 1264101365239. Its totient is φ = 318507344704.

The previous prime is 637021074409. The next prime is 637021074509. The reversal of 637021074496 is 694470120736.

The square root of 637021074496 is 798136.

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

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 6335205 + ... + 6434971.

Almost surely, 2^637021074496 is an apocalyptic number.

637021074496 is the 798136-th square number.

It is an amenable number.

637021074496 is a deficient number, since it is larger than the sum of its proper divisors (627080290743).

637021074496 is an frugal number, since it uses more digits than its factorization.

637021074496 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199546 (or 99769 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 49.

Multiplying 637021074496 by its sum of digits (49), we get a square (31214032650304 = 5586952²).

The spelling of 637021074496 in words is "six hundred thirty-seven billion, twenty-one million, seventy-four thousand, four hundred ninety-six".