512886191021851 has 2 divisors, whose sum is σ = 512886191021852. Its totient is φ = 512886191021850.

The previous prime is 512886191021807. The next prime is 512886191021879. The reversal of 512886191021851 is 158120191688215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 512886191021851 - 2²³ = 512886182633243 is a prime.

It is not a weakly prime, because it can be changed into another prime (512886191091851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256443095510925 + 256443095510926.

It is an arithmetic number, because the mean of its divisors is an integer number (256443095510926).

Almost surely, 2^{512886191021851} is an apocalyptic number.

512886191021851 is a deficient number, since it is larger than the sum of its proper divisors (1).

512886191021851 is an equidigital number, since it uses as much as digits as its factorization.

512886191021851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2764800, while the sum is 58.

The spelling of 512886191021851 in words is "five hundred twelve trillion, eight hundred eighty-six billion, one hundred ninety-one million, twenty-one thousand, eight hundred fifty-one".