855144767232 has 1152 divisors, whose sum is σ = 3229166796800. Its totient is φ = 217678233600.

The previous prime is 855144767231. The next prime is 855144767303. The reversal of 855144767232 is 232767441558.

855144767232 is a `hidden beast` number, since 8 + 5 + 514 + 47 + 67 + 23 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (1152).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (855144767231) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1054432107 + ... + 1054432917.

Almost surely, 2^855144767232 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 855144767232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1614583398400).

855144767232 is an abundant number, since it is smaller than the sum of its proper divisors (2374022029568).

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

855144767232 is a wasteful number, since it uses less digits than its factorization.

855144767232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 930 (or 910 counting only the distinct ones).

The product of its digits is 11289600, while the sum is 54.

The spelling of 855144767232 in words is "eight hundred fifty-five billion, one hundred forty-four million, seven hundred sixty-seven thousand, two hundred thirty-two".