501461720135744 has 56 divisors (see below), whose sum is σ = 1001117744621568. Its totient is φ = 249211792839680.

The previous prime is 501461720135723. The next prime is 501461720135791. The reversal of 501461720135744 is 447531027164105.

It is a super-2 number, since 2×501461720135744² (a number of 30 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 501461720135692 and 501461720135701.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 149609729 + ... + 152924799.

It is an arithmetic number, because the mean of its divisors is an integer number (17877102582528).

Almost surely, 2^{501461720135744} is an apocalyptic number.

It is an amenable number.

501461720135744 is a deficient number, since it is larger than the sum of its proper divisors (499656024485824).

501461720135744 is a wasteful number, since it uses less digits than its factorization.

501461720135744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3329403 (or 3329393 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 50.

Adding to 501461720135744 its reverse (447531027164105), we get a palindrome (948992747299849).

The spelling of 501461720135744 in words is "five hundred one trillion, four hundred sixty-one billion, seven hundred twenty million, one hundred thirty-five thousand, seven hundred forty-four".