513211155122441 has 4 divisors (see below), whose sum is σ = 513233647635732. Its totient is φ = 513188662609152.

The previous prime is 513211155122429. The next prime is 513211155122467. The reversal of 513211155122441 is 144221551112315.

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 503571552160000 + 9639602962441 = 22440400^2 + 3104771^2 .

It is a cyclic number.

It is not a de Polignac number, because 513211155122441 - 2²² = 513211150928137 is a prime.

It is a super-2 number, since 2×513211155122441² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 513211155122395 and 513211155122404.

It is not an unprimeable number, because it can be changed into a prime (513211155122401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11246222420 + ... + 11246268053.

It is an arithmetic number, because the mean of its divisors is an integer number (128308411908933).

Almost surely, 2^{513211155122441} is an apocalyptic number.

It is an amenable number.

513211155122441 is a deficient number, since it is larger than the sum of its proper divisors (22492513291).

513211155122441 is a wasteful number, since it uses less digits than its factorization.

513211155122441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22492513290.

The product of its digits is 48000, while the sum is 38.

The spelling of 513211155122441 in words is "five hundred thirteen trillion, two hundred eleven billion, one hundred fifty-five million, one hundred twenty-two thousand, four hundred forty-one".