845271899928 has 64 divisors (see below), whose sum is σ = 2348140492800. Its totient is φ = 281737740960.

The previous prime is 845271899903. The next prime is 845271899929. The reversal of 845271899928 is 829998172548.

845271899928 is a `hidden beast` number, since 8 + 4 + 527 + 1 + 8 + 9 + 9 + 92 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845271899929) 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, 3168613 + ... + 3425003.

It is an arithmetic number, because the mean of its divisors is an integer number (36689695200).

Almost surely, 2^845271899928 is an apocalyptic number.

It is an amenable number.

845271899928 is an abundant number, since it is smaller than the sum of its proper divisors (1502868592872).

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

845271899928 is a wasteful number, since it uses less digits than its factorization.

845271899928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271669 (or 271659 counting only the distinct ones).

The product of its digits is 209018880, while the sum is 72.

The spelling of 845271899928 in words is "eight hundred forty-five billion, two hundred seventy-one million, eight hundred ninety-nine thousand, nine hundred twenty-eight".