85856777399 has 8 divisors (see below), whose sum is σ = 88867056000. Its totient is φ = 82849812192.

The previous prime is 85856777393. The next prime is 85856777401. The reversal of 85856777399 is 99377765858.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85856777399 - 2³² = 81561810103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85856777393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 775559 + ... + 879320.

It is an arithmetic number, because the mean of its divisors is an integer number (11108382000).

Almost surely, 2^85856777399 is an apocalyptic number.

85856777399 is a deficient number, since it is larger than the sum of its proper divisors (3010278601).

85856777399 is a wasteful number, since it uses less digits than its factorization.

85856777399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1656697.

The product of its digits is 800150400, while the sum is 74.

The spelling of 85856777399 in words is "eighty-five billion, eight hundred fifty-six million, seven hundred seventy-seven thousand, three hundred ninety-nine".