7857150079349 has 2 divisors, whose sum is σ = 7857150079350. Its totient is φ = 7857150079348.

The previous prime is 7857150079327. The next prime is 7857150079397. The reversal of 7857150079349 is 9439700517587.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5045944557124 + 2811205522225 = 2246318^2 + 1676665^2 .

It is a cyclic number.

It is not a de Polignac number, because 7857150079349 - 2²⁸ = 7856881643893 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7857150679349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3928575039674 + 3928575039675.

It is an arithmetic number, because the mean of its divisors is an integer number (3928575039675).

Almost surely, 2^{7857150079349} is an apocalyptic number.

It is an amenable number.

7857150079349 is a deficient number, since it is larger than the sum of its proper divisors (1).

7857150079349 is an equidigital number, since it uses as much as digits as its factorization.

7857150079349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 66679200, while the sum is 65.

The spelling of 7857150079349 in words is "seven trillion, eight hundred fifty-seven billion, one hundred fifty million, seventy-nine thousand, three hundred forty-nine".