83375143685 has 4 divisors (see below), whose sum is σ = 100050172428. Its totient is φ = 66700114944.

The previous prime is 83375143661. The next prime is 83375143699. The reversal of 83375143685 is 58634157338.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33386232961 + 49988910724 = 182719^2 + 223582^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83375143685 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8337514364 + ... + 8337514373.

It is an arithmetic number, because the mean of its divisors is an integer number (25012543107).

Almost surely, 2^83375143685 is an apocalyptic number.

It is an amenable number.

83375143685 is a deficient number, since it is larger than the sum of its proper divisors (16675028743).

83375143685 is a wasteful number, since it uses less digits than its factorization.

83375143685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16675028742.

The product of its digits is 7257600, while the sum is 53.

The spelling of 83375143685 in words is "eighty-three billion, three hundred seventy-five million, one hundred forty-three thousand, six hundred eighty-five".