7812642017 has 2 divisors, whose sum is σ = 7812642018. Its totient is φ = 7812642016.

The previous prime is 7812641933. The next prime is 7812642067. The reversal of 7812642017 is 7102462187.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7792652176 + 19989841 = 88276^2 + 4471^2 .

It is an emirp because it is prime and its reverse (7102462187) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7812642017 - 2⁸ = 7812641761 is a prime.

It is a super-2 number, since 2×7812642017² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7812642067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3906321008 + 3906321009.

It is an arithmetic number, because the mean of its divisors is an integer number (3906321009).

Almost surely, 2^7812642017 is an apocalyptic number.

It is an amenable number.

7812642017 is a deficient number, since it is larger than the sum of its proper divisors (1).

7812642017 is an equidigital number, since it uses as much as digits as its factorization.

7812642017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37632, while the sum is 38.

The square root of 7812642017 is about 88389.1510141375. The cubic root of 7812642017 is about 1984.2633382439.

The spelling of 7812642017 in words is "seven billion, eight hundred twelve million, six hundred forty-two thousand, seventeen".