7142857142777 has 2 divisors, whose sum is σ = 7142857142778. Its totient is φ = 7142857142776.

The previous prime is 7142857142657. The next prime is 7142857142857. The reversal of 7142857142777 is 7772417582417.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5121060376576 + 2021796766201 = 2262976^2 + 1421899^2 .

It is a cyclic number.

It is not a de Polignac number, because 7142857142777 - 2¹⁰ = 7142857141753 is a prime.

It is not a weakly prime, because it can be changed into another prime (7142857042777) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3571428571388 + 3571428571389.

It is an arithmetic number, because the mean of its divisors is an integer number (3571428571389).

Almost surely, 2^{7142857142777} is an apocalyptic number.

It is an amenable number.

7142857142777 is a deficient number, since it is larger than the sum of its proper divisors (1).

7142857142777 is an equidigital number, since it uses as much as digits as its factorization.

7142857142777 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43025920, while the sum is 62.

The spelling of 7142857142777 in words is "seven trillion, one hundred forty-two billion, eight hundred fifty-seven million, one hundred forty-two thousand, seven hundred seventy-seven".