513524161145 has 4 divisors (see below), whose sum is σ = 616228993380. Its totient is φ = 410819328912.

The previous prime is 513524161091. The next prime is 513524161193. The reversal of 513524161145 is 541161425315.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 73675330624 + 439848830521 = 271432^2 + 663211^2 .

It is a cyclic number.

It is not a de Polignac number, because 513524161145 - 2²⁴ = 513507383929 is a prime.

It is a super-2 number, since 2×513524161145² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 513524161099 and 513524161108.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51352416110 + ... + 51352416119.

It is an arithmetic number, because the mean of its divisors is an integer number (154057248345).

Almost surely, 2^513524161145 is an apocalyptic number.

It is an amenable number.

513524161145 is a deficient number, since it is larger than the sum of its proper divisors (102704832235).

513524161145 is a wasteful number, since it uses less digits than its factorization.

513524161145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102704832234.

The product of its digits is 72000, while the sum is 38.

The spelling of 513524161145 in words is "five hundred thirteen billion, five hundred twenty-four million, one hundred sixty-one thousand, one hundred forty-five".