501997497748 has 12 divisors (see below), whose sum is σ = 879282106612. Its totient is φ = 250774038720.

The previous prime is 501997497731. The next prime is 501997497751. The reversal of 501997497748 is 847794799105.

It can be written as a sum of positive squares in 2 ways, for example, as 189261541764 + 312735955984 = 435042^2 + 559228^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56172513 + ... + 56181448.

Almost surely, 2^501997497748 is an apocalyptic number.

It is an amenable number.

501997497748 is a deficient number, since it is larger than the sum of its proper divisors (377284608864).

501997497748 is a wasteful number, since it uses less digits than its factorization.

501997497748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112355082 (or 112355080 counting only the distinct ones).

The product of its (nonzero) digits is 160030080, while the sum is 70.

The spelling of 501997497748 in words is "five hundred one billion, nine hundred ninety-seven million, four hundred ninety-seven thousand, seven hundred forty-eight".