85856463772 has 48 divisors (see below), whose sum is σ = 154854588672. Its totient is φ = 41625745920.

The previous prime is 85856463733. The next prime is 85856463821. The reversal of 85856463772 is 27736465858.

It is a self number, because there is not a number n which added to its sum of digits gives 85856463772.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28268638 + ... + 28271674.

It is an arithmetic number, because the mean of its divisors is an integer number (3226137264).

Almost surely, 2^85856463772 is an apocalyptic number.

85856463772 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

85856463772 is a deficient number, since it is larger than the sum of its proper divisors (68998124900).

85856463772 is a wasteful number, since it uses less digits than its factorization.

85856463772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4078 (or 4076 counting only the distinct ones).

The product of its digits is 67737600, while the sum is 61.

The spelling of 85856463772 in words is "eighty-five billion, eight hundred fifty-six million, four hundred sixty-three thousand, seven hundred seventy-two".