612775251691 has 2 divisors, whose sum is σ = 612775251692. Its totient is φ = 612775251690.

The previous prime is 612775251679. The next prime is 612775251709. The reversal of 612775251691 is 196152577216.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 612775251691 - 2¹⁷ = 612775120619 is a prime.

It is not a weakly prime, because it can be changed into another prime (612775251091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306387625845 + 306387625846.

It is an arithmetic number, because the mean of its divisors is an integer number (306387625846).

Almost surely, 2^612775251691 is an apocalyptic number.

612775251691 is a deficient number, since it is larger than the sum of its proper divisors (1).

612775251691 is an equidigital number, since it uses as much as digits as its factorization.

612775251691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1587600, while the sum is 52.

The spelling of 612775251691 in words is "six hundred twelve billion, seven hundred seventy-five million, two hundred fifty-one thousand, six hundred ninety-one".