612717783091 has 2 divisors, whose sum is σ = 612717783092. Its totient is φ = 612717783090.

The previous prime is 612717783079. The next prime is 612717783109. The reversal of 612717783091 is 190387717216.

Together with next prime (612717783109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 612717783091 - 2¹³ = 612717774899 is a prime.

It is not a weakly prime, because it can be changed into another prime (612717783991) 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, 306358891545 + 306358891546.

It is an arithmetic number, because the mean of its divisors is an integer number (306358891546).

Almost surely, 2^612717783091 is an apocalyptic number.

612717783091 is a deficient number, since it is larger than the sum of its proper divisors (1).

612717783091 is an equidigital number, since it uses as much as digits as its factorization.

612717783091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 889056, while the sum is 52.

The spelling of 612717783091 in words is "six hundred twelve billion, seven hundred seventeen million, seven hundred eighty-three thousand, ninety-one".