520503730265407 has 128 divisors (see below), whose sum is σ = 625258171219968. Its totient is φ = 424111955097600.

The previous prime is 520503730265377. The next prime is 520503730265411. The reversal of 520503730265407 is 704562037305025.

It is not a de Polignac number, because 520503730265407 - 2²³ = 520503721876799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (520503730265447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 532757144103 + ... + 532757145079.

It is an arithmetic number, because the mean of its divisors is an integer number (4884829462656).

Almost surely, 2^{520503730265407} is an apocalyptic number.

520503730265407 is a deficient number, since it is larger than the sum of its proper divisors (104754440954561).

520503730265407 is a wasteful number, since it uses less digits than its factorization.

520503730265407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069.

The product of its (nonzero) digits is 5292000, while the sum is 49.

The spelling of 520503730265407 in words is "five hundred twenty trillion, five hundred three billion, seven hundred thirty million, two hundred sixty-five thousand, four hundred seven".