85143409339 has 4 divisors (see below), whose sum is σ = 85272220000. Its totient is φ = 85014598680.

The previous prime is 85143409301. The next prime is 85143409381. The reversal of 85143409339 is 93390434158.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85143409339 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85143409292 and 85143409301.

It is not an unprimeable number, because it can be changed into a prime (85143409139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64404339 + ... + 64405660.

It is an arithmetic number, because the mean of its divisors is an integer number (21318055000).

Almost surely, 2^85143409339 is an apocalyptic number.

85143409339 is a deficient number, since it is larger than the sum of its proper divisors (128810661).

85143409339 is a wasteful number, since it uses less digits than its factorization.

85143409339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128810660.

The product of its (nonzero) digits is 1399680, while the sum is 49.

The spelling of 85143409339 in words is "eighty-five billion, one hundred forty-three million, four hundred nine thousand, three hundred thirty-nine".