7857150079397 has 2 divisors, whose sum is σ = 7857150079398. Its totient is φ = 7857150079396.

The previous prime is 7857150079349. The next prime is 7857150079409. The reversal of 7857150079397 is 7939700517587.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5855267494756 + 2001882584641 = 2419766^2 + 1414879^2 .

It is a cyclic number.

It is not a de Polignac number, because 7857150079397 - 2¹² = 7857150075301 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7857150079327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3928575039698 + 3928575039699.

It is an arithmetic number, because the mean of its divisors is an integer number (3928575039699).

Almost surely, 2^{7857150079397} is an apocalyptic number.

It is an amenable number.

7857150079397 is a deficient number, since it is larger than the sum of its proper divisors (1).

7857150079397 is an equidigital number, since it uses as much as digits as its factorization.

7857150079397 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116688600, while the sum is 68.

The spelling of 7857150079397 in words is "seven trillion, eight hundred fifty-seven billion, one hundred fifty million, seventy-nine thousand, three hundred ninety-seven".