513542220451441 has 4 divisors (see below), whose sum is σ = 513542266193392. Its totient is φ = 513542174709492.

The previous prime is 513542220451391. The next prime is 513542220451489. The reversal of 513542220451441 is 144154022245315.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 513542220451441 - 2²³ = 513542212062833 is a prime.

It is a super-2 number, since 2×513542220451441² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (513542220451241) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6802630 + ... + 32762176.

It is an arithmetic number, because the mean of its divisors is an integer number (128385566548348).

Almost surely, 2^{513542220451441} is an apocalyptic number.

It is an amenable number.

513542220451441 is a deficient number, since it is larger than the sum of its proper divisors (45741951).

513542220451441 is a wasteful number, since it uses less digits than its factorization.

513542220451441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45741950.

The product of its (nonzero) digits is 768000, while the sum is 43.

Adding to 513542220451441 its reverse (144154022245315), we get a palindrome (657696242696756).

The spelling of 513542220451441 in words is "five hundred thirteen trillion, five hundred forty-two billion, two hundred twenty million, four hundred fifty-one thousand, four hundred forty-one".