512005311101 has 4 divisors (see below), whose sum is σ = 513673081152. Its totient is φ = 510337541052.

The previous prime is 512005311079. The next prime is 512005311119. The reversal of 512005311101 is 101113500215.

It is a happy number.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-512005311101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (512005313101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 833884565 + ... + 833885178.

It is an arithmetic number, because the mean of its divisors is an integer number (128418270288).

Almost surely, 2^512005311101 is an apocalyptic number.

It is an amenable number.

512005311101 is a deficient number, since it is larger than the sum of its proper divisors (1667770051).

512005311101 is a wasteful number, since it uses less digits than its factorization.

512005311101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667770050.

The product of its (nonzero) digits is 150, while the sum is 20.

Adding to 512005311101 its reverse (101113500215), we get a palindrome (613118811316).

The spelling of 512005311101 in words is "five hundred twelve billion, five million, three hundred eleven thousand, one hundred one".