7142857143965 has 16 divisors (see below), whose sum is σ = 8600310366336. Its totient is φ = 5695036833600.

The previous prime is 7142857143907. The next prime is 7142857144009. The reversal of 7142857143965 is 5693417582417.

It is a happy number.

It is not a de Polignac number, because 7142857143965 - 2²⁸ = 7142588708509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7142857143898 and 7142857143907.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9868379 + ... + 10567431.

It is an arithmetic number, because the mean of its divisors is an integer number (537519397896).

Almost surely, 2^{7142857143965} is an apocalyptic number.

It is an amenable number.

7142857143965 is a deficient number, since it is larger than the sum of its proper divisors (1457453222371).

7142857143965 is a wasteful number, since it uses less digits than its factorization.

7142857143965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705940.

The product of its digits is 50803200, while the sum is 62.

The spelling of 7142857143965 in words is "seven trillion, one hundred forty-two billion, eight hundred fifty-seven million, one hundred forty-three thousand, nine hundred sixty-five".