7893151716649 has 2 divisors, whose sum is σ = 7893151716650. Its totient is φ = 7893151716648.

The previous prime is 7893151716643. The next prime is 7893151716731. The reversal of 7893151716649 is 9466171513987.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6790584515625 + 1102567201024 = 2605875^2 + 1050032^2 .

It is a cyclic number.

It is not a de Polignac number, because 7893151716649 - 2⁹ = 7893151716137 is a prime.

It is not a weakly prime, because it can be changed into another prime (7893151716643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3946575858324 + 3946575858325.

It is an arithmetic number, because the mean of its divisors is an integer number (3946575858325).

Almost surely, 2^{7893151716649} is an apocalyptic number.

It is an amenable number.

7893151716649 is a deficient number, since it is larger than the sum of its proper divisors (1).

7893151716649 is an equidigital number, since it uses as much as digits as its factorization.

7893151716649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68584320, while the sum is 67.

The spelling of 7893151716649 in words is "seven trillion, eight hundred ninety-three billion, one hundred fifty-one million, seven hundred sixteen thousand, six hundred forty-nine".