7142857142881 has 2 divisors, whose sum is σ = 7142857142882. Its totient is φ = 7142857142880.

The previous prime is 7142857142857. The next prime is 7142857142921. The reversal of 7142857142881 is 1882417582417.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5795959950400 + 1346897192481 = 2407480^2 + 1160559^2 .

It is a cyclic number.

It is not a de Polignac number, because 7142857142881 - 2¹⁵ = 7142857110113 is a prime.

It is a super-2 number, since 2×7142857142881² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7142857142581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3571428571440 + 3571428571441.

It is an arithmetic number, because the mean of its divisors is an integer number (3571428571441).

Almost surely, 2^{7142857142881} is an apocalyptic number.

It is an amenable number.

7142857142881 is a deficient number, since it is larger than the sum of its proper divisors (1).

7142857142881 is an equidigital number, since it uses as much as digits as its factorization.

7142857142881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8028160, while the sum is 58.

The spelling of 7142857142881 in words is "seven trillion, one hundred forty-two billion, eight hundred fifty-seven million, one hundred forty-two thousand, eight hundred eighty-one".