506390954645 has 8 divisors (see below), whose sum is σ = 607681285080. Its totient is φ = 405104670720.

The previous prime is 506390954611. The next prime is 506390954651. The reversal of 506390954645 is 546459093605.

It can be written as a sum of positive squares in 4 ways, for example, as 40440003409 + 465950951236 = 201097^2 + 682606^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 506390954645 - 2⁶ = 506390954581 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 729140 + ... + 1242749.

It is an arithmetic number, because the mean of its divisors is an integer number (75960160635).

Almost surely, 2^506390954645 is an apocalyptic number.

It is an amenable number.

506390954645 is a deficient number, since it is larger than the sum of its proper divisors (101290330435).

506390954645 is a wasteful number, since it uses less digits than its factorization.

506390954645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2023255.

The product of its (nonzero) digits is 17496000, while the sum is 56.

The spelling of 506390954645 in words is "five hundred six billion, three hundred ninety million, nine hundred fifty-four thousand, six hundred forty-five".