1612666246517 has 2 divisors, whose sum is σ = 1612666246518. Its totient is φ = 1612666246516.

The previous prime is 1612666246501. The next prime is 1612666246571. The reversal of 1612666246517 is 7156426662161.

Together with next prime (1612666246571) 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., 1233356840356 + 379309406161 = 1110566^2 + 615881^2 .

It is a cyclic number.

It is not a de Polignac number, because 1612666246517 - 2⁴ = 1612666246501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1612666246417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 806333123258 + 806333123259.

It is an arithmetic number, because the mean of its divisors is an integer number (806333123259).

Almost surely, 2^{1612666246517} is an apocalyptic number.

It is an amenable number.

1612666246517 is a deficient number, since it is larger than the sum of its proper divisors (1).

1612666246517 is an equidigital number, since it uses as much as digits as its factorization.

1612666246517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4354560, while the sum is 53.

The spelling of 1612666246517 in words is "one trillion, six hundred twelve billion, six hundred sixty-six million, two hundred forty-six thousand, five hundred seventeen".