511315113191 has 2 divisors, whose sum is σ = 511315113192. Its totient is φ = 511315113190.

The previous prime is 511315113163. The next prime is 511315113229. The reversal of 511315113191 is 191311513115.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-511315113191 is a prime.

It is a super-2 number, since 2×511315113191² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (511315113391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255657556595 + 255657556596.

It is an arithmetic number, because the mean of its divisors is an integer number (255657556596).

Almost surely, 2^511315113191 is an apocalyptic number.

511315113191 is a deficient number, since it is larger than the sum of its proper divisors (1).

511315113191 is an equidigital number, since it uses as much as digits as its factorization.

511315113191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2025, while the sum is 32.

The spelling of 511315113191 in words is "five hundred eleven billion, three hundred fifteen million, one hundred thirteen thousand, one hundred ninety-one".