856543873337 has 4 divisors (see below), whose sum is σ = 884174320896. Its totient is φ = 828913425780.

The previous prime is 856543873331. The next prime is 856543873373. The reversal of 856543873337 is 733378345658.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 856543873337 - 2¹⁸ = 856543611193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 856543873337.

It is not an unprimeable number, because it can be changed into a prime (856543873331) 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, 13815223733 + ... + 13815223794.

It is an arithmetic number, because the mean of its divisors is an integer number (221043580224).

Almost surely, 2^856543873337 is an apocalyptic number.

It is an amenable number.

856543873337 is a deficient number, since it is larger than the sum of its proper divisors (27630447559).

856543873337 is a wasteful number, since it uses less digits than its factorization.

856543873337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27630447558.

The product of its digits is 152409600, while the sum is 62.

The spelling of 856543873337 in words is "eight hundred fifty-six billion, five hundred forty-three million, eight hundred seventy-three thousand, three hundred thirty-seven".