858815467660 has 12 divisors (see below), whose sum is σ = 1803512482128. Its totient is φ = 343526187056.

The previous prime is 858815467649. The next prime is 858815467661. The reversal of 858815467660 is 66764518858.

It is a junction number, because it is equal to n+sod(n) for n = 858815467592 and 858815467601.

It is not an unprimeable number, because it can be changed into a prime (858815467661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21470386672 + ... + 21470386711.

It is an arithmetic number, because the mean of its divisors is an integer number (150292706844).

Almost surely, 2^858815467660 is an apocalyptic number.

It is an amenable number.

858815467660 is an abundant number, since it is smaller than the sum of its proper divisors (944697014468).

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

858815467660 is a wasteful number, since it uses less digits than its factorization.

858815467660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42940773392 (or 42940773390 counting only the distinct ones).

The product of its (nonzero) digits is 77414400, while the sum is 64.

The spelling of 858815467660 in words is "eight hundred fifty-eight billion, eight hundred fifteen million, four hundred sixty-seven thousand, six hundred sixty".