855656778044 has 6 divisors (see below), whose sum is σ = 1497399361584. Its totient is φ = 427828389020.

The previous prime is 855656778043. The next prime is 855656778047. The reversal of 855656778044 is 440877656558.

855656778044 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855656778043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106957097252 + ... + 106957097259.

It is an arithmetic number, because the mean of its divisors is an integer number (249566560264).

Almost surely, 2^855656778044 is an apocalyptic number.

It is an amenable number.

855656778044 is a deficient number, since it is larger than the sum of its proper divisors (641742583540).

855656778044 is a wasteful number, since it uses less digits than its factorization.

855656778044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213914194515 (or 213914194513 counting only the distinct ones).

The product of its (nonzero) digits is 225792000, while the sum is 65.

The spelling of 855656778044 in words is "eight hundred fifty-five billion, six hundred fifty-six million, seven hundred seventy-eight thousand, forty-four".