858707066340 has 96 divisors (see below), whose sum is σ = 2673560736000. Its totient is φ = 228814753536.

The previous prime is 858707066339. The next prime is 858707066401. The reversal of 858707066340 is 43660707858.

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109456 + ... + 1315064.

It is an arithmetic number, because the mean of its divisors is an integer number (27849591000).

Almost surely, 2^858707066340 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 858707066340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1336780368000).

858707066340 is an abundant number, since it is smaller than the sum of its proper divisors (1814853669660).

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

858707066340 is a wasteful number, since it uses less digits than its factorization.

858707066340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206946 (or 1206938 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 54.

The spelling of 858707066340 in words is "eight hundred fifty-eight billion, seven hundred seven million, sixty-six thousand, three hundred forty".