855712144872 has 96 divisors (see below), whose sum is σ = 2604341376000. Its totient is φ = 251848384128.

The previous prime is 855712144841. The next prime is 855712144873. The reversal of 855712144872 is 278441217558.

855712144872 is a `hidden beast` number, since 8 + 5 + 5 + 7 + 121 + 448 + 72 = 666.

It is not an unprimeable number, because it can be changed into a prime (855712144873) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19852872 + ... + 19895927.

It is an arithmetic number, because the mean of its divisors is an integer number (27128556000).

Almost surely, 2^855712144872 is an apocalyptic number.

It is an amenable number.

855712144872 is an abundant number, since it is smaller than the sum of its proper divisors (1748629231128).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

855712144872 is a wasteful number, since it uses less digits than its factorization.

855712144872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39748847 (or 39748840 counting only the distinct ones).

The product of its digits is 5017600, while the sum is 54.

The spelling of 855712144872 in words is "eight hundred fifty-five billion, seven hundred twelve million, one hundred forty-four thousand, eight hundred seventy-two".