513533213451 has 12 divisors (see below), whose sum is σ = 741838685328. Its totient is φ = 342323865744.

The previous prime is 513533213393. The next prime is 513533213497. The reversal of 513533213451 is 154312335315.

513533213451 is a `hidden beast` number, since 51 + 3 + 533 + 21 + 3 + 4 + 51 = 666.

It is not a de Polignac number, because 513533213451 - 2⁹ = 513533212939 is a prime.

It is a super-2 number, since 2×513533213451² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (513533213251) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2531055 + ... + 2726408.

It is an arithmetic number, because the mean of its divisors is an integer number (61819890444).

Almost surely, 2^513533213451 is an apocalyptic number.

513533213451 is a deficient number, since it is larger than the sum of its proper divisors (228305471877).

513533213451 is a wasteful number, since it uses less digits than its factorization.

513533213451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5268322 (or 5268319 counting only the distinct ones).

The product of its digits is 81000, while the sum is 36.

Adding to 513533213451 its reverse (154312335315), we get a palindrome (667845548766).

The spelling of 513533213451 in words is "five hundred thirteen billion, five hundred thirty-three million, two hundred thirteen thousand, four hundred fifty-one".