513511251334243 has 16 divisors (see below), whose sum is σ = 532196873298720. Its totient is φ = 494890967033344.

The previous prime is 513511251334229. The next prime is 513511251334267. The reversal of 513511251334243 is 342433152115315.

It is a cyclic number.

It is not a de Polignac number, because 513511251334243 - 2²⁵ = 513511217779811 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 513511251334243.

It is not an unprimeable number, because it can be changed into a prime (513511251334223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 250627755 + ... + 252668347.

It is an arithmetic number, because the mean of its divisors is an integer number (33262304581170).

Almost surely, 2^{513511251334243} is an apocalyptic number.

513511251334243 is a deficient number, since it is larger than the sum of its proper divisors (18685621964477).

513511251334243 is a wasteful number, since it uses less digits than its factorization.

513511251334243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2056598.

The product of its digits is 648000, while the sum is 43.

The spelling of 513511251334243 in words is "five hundred thirteen trillion, five hundred eleven billion, two hundred fifty-one million, three hundred thirty-four thousand, two hundred forty-three".