858481329552 has 640 divisors, whose sum is σ = 2888314564608. Its totient is φ = 213282201600.

The previous prime is 858481329539. The next prime is 858481329557. The reversal of 858481329552 is 255923184858.

It is not an unprimeable number, because it can be changed into a prime (858481329557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3099210438 + ... + 3099210714.

Almost surely, 2^858481329552 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 858481329552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1444157282304).

858481329552 is an abundant number, since it is smaller than the sum of its proper divisors (2029833235056).

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

858481329552 is a wasteful number, since it uses less digits than its factorization.

858481329552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 647 (or 641 counting only the distinct ones).

The product of its digits is 27648000, while the sum is 60.

The spelling of 858481329552 in words is "eight hundred fifty-eight billion, four hundred eighty-one million, three hundred twenty-nine thousand, five hundred fifty-two".