864133384452 has 96 divisors (see below), whose sum is σ = 2299966026624. Its totient is φ = 250157107200.

The previous prime is 864133384447. The next prime is 864133384459. The reversal of 864133384452 is 254483331468.

It is a super-2 number, since 2×864133384452² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 864133384395 and 864133384404.

It is not an unprimeable number, because it can be changed into a prime (864133384459) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7530427 + ... + 7644317.

It is an arithmetic number, because the mean of its divisors is an integer number (23957979444).

Almost surely, 2^864133384452 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 864133384452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1149983013312).

864133384452 is an abundant number, since it is smaller than the sum of its proper divisors (1435832642172).

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

864133384452 is a wasteful number, since it uses less digits than its factorization.

864133384452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116789 (or 116787 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 51.

The spelling of 864133384452 in words is "eight hundred sixty-four billion, one hundred thirty-three million, three hundred eighty-four thousand, four hundred fifty-two".