855722870123 has 16 divisors (see below), whose sum is σ = 998618562144. Its totient is φ = 724621148160.

The previous prime is 855722870113. The next prime is 855722870147. The reversal of 855722870123 is 321078227558.

It is a cyclic number.

It is not a de Polignac number, because 855722870123 - 2⁸ = 855722869867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (855722870113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23569790 + ... + 23606067.

It is an arithmetic number, because the mean of its divisors is an integer number (62413660134).

Almost surely, 2^855722870123 is an apocalyptic number.

855722870123 is a deficient number, since it is larger than the sum of its proper divisors (142895692021).

855722870123 is a wasteful number, since it uses less digits than its factorization.

855722870123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47175982.

The product of its (nonzero) digits is 1881600, while the sum is 50.

The spelling of 855722870123 in words is "eight hundred fifty-five billion, seven hundred twenty-two million, eight hundred seventy thousand, one hundred twenty-three".