512206145197 has 2 divisors, whose sum is σ = 512206145198. Its totient is φ = 512206145196.

The previous prime is 512206145179. The next prime is 512206145357. The reversal of 512206145197 is 791541602215.

Together with previous prime (512206145179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 404573595721 + 107632549476 = 636061^2 + 328074^2 .

It is a cyclic number.

It is not a de Polignac number, because 512206145197 - 2²³ = 512197756589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (512206145597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 256103072598 + 256103072599.

It is an arithmetic number, because the mean of its divisors is an integer number (256103072599).

Almost surely, 2^512206145197 is an apocalyptic number.

It is an amenable number.

512206145197 is a deficient number, since it is larger than the sum of its proper divisors (1).

512206145197 is an equidigital number, since it uses as much as digits as its factorization.

512206145197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 43.

The spelling of 512206145197 in words is "five hundred twelve billion, two hundred six million, one hundred forty-five thousand, one hundred ninety-seven".