511055224321 has 4 divisors (see below), whose sum is σ = 516016925632. Its totient is φ = 506093523012.

The previous prime is 511055224319. The next prime is 511055224399. The reversal of 511055224321 is 123422550115.

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 an emirpimes, since its reverse is a distinct semiprime: 123422550115 = 5 ⋅24684510023.

It is a cyclic number.

It is not a de Polignac number, because 511055224321 - 2¹ = 511055224319 is a prime.

It is a super-2 number, since 2×511055224321² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (511055224721) 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, 2480850501 + ... + 2480850706.

It is an arithmetic number, because the mean of its divisors is an integer number (129004231408).

Almost surely, 2^511055224321 is an apocalyptic number.

It is an amenable number.

511055224321 is a deficient number, since it is larger than the sum of its proper divisors (4961701311).

511055224321 is a wasteful number, since it uses less digits than its factorization.

511055224321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4961701310.

The product of its (nonzero) digits is 12000, while the sum is 31.

Adding to 511055224321 its reverse (123422550115), we get a palindrome (634477774436).

The spelling of 511055224321 in words is "five hundred eleven billion, fifty-five million, two hundred twenty-four thousand, three hundred twenty-one".