513203520445 has 32 divisors (see below), whose sum is σ = 768304281600. Its totient is φ = 319711371840.

The previous prime is 513203520391. The next prime is 513203520469. The reversal of 513203520445 is 544025302315.

It is not a de Polignac number, because 513203520445 - 2¹⁵ = 513203487677 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 513203520445.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 162106 + ... + 1026004.

It is an arithmetic number, because the mean of its divisors is an integer number (24009508800).

Almost surely, 2^513203520445 is an apocalyptic number.

513203520445 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

513203520445 is a deficient number, since it is larger than the sum of its proper divisors (255100761155).

513203520445 is a wasteful number, since it uses less digits than its factorization.

513203520445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 865465.

The product of its (nonzero) digits is 72000, while the sum is 34.

The spelling of 513203520445 in words is "five hundred thirteen billion, two hundred three million, five hundred twenty thousand, four hundred forty-five".