671150238858 has 160 divisors (see below), whose sum is σ = 1727792763840. Its totient is φ = 192579171840.

The previous prime is 671150238853. The next prime is 671150238859. The reversal of 671150238858 is 858832051176.

671150238858 is a `hidden beast` number, since 6 + 7 + 1 + 1 + 502 + 3 + 88 + 58 = 666.

671150238858 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (671150238851) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 95916216 + ... + 95923212.

It is an arithmetic number, because the mean of its divisors is an integer number (10798704774).

Almost surely, 2^671150238858 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671150238858, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (863896381920).

671150238858 is an abundant number, since it is smaller than the sum of its proper divisors (1056642524982).

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

671150238858 is a wasteful number, since it uses less digits than its factorization.

671150238858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9874 (or 9865 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 54.

The spelling of 671150238858 in words is "six hundred seventy-one billion, one hundred fifty million, two hundred thirty-eight thousand, eight hundred fifty-eight".