520503207611045 has 16 divisors (see below), whose sum is σ = 628102591593840. Its totient is φ = 414072280978944.

The previous prime is 520503207611033. The next prime is 520503207611081. The reversal of 520503207611045 is 540116702305025.

It can be written as a sum of positive squares in 8 ways, for example, as 142340695758244 + 378162511852801 = 11930662^2 + 19446401^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-520503207611045 is a prime.

It is a super-2 number, since 2×520503207611045² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 520503207610993 and 520503207611011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 136231130 + ... + 139999739.

It is an arithmetic number, because the mean of its divisors is an integer number (39256411974615).

Almost surely, 2^{520503207611045} is an apocalyptic number.

It is an amenable number.

520503207611045 is a deficient number, since it is larger than the sum of its proper divisors (107599383982795).

520503207611045 is a wasteful number, since it uses less digits than its factorization.

520503207611045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276232984.

The product of its (nonzero) digits is 252000, while the sum is 41.

The spelling of 520503207611045 in words is "five hundred twenty trillion, five hundred three billion, two hundred seven million, six hundred eleven thousand, forty-five".