671888994500 has 96 divisors (see below), whose sum is σ = 1477308792960. Its totient is φ = 266948035200.

The previous prime is 671888994457. The next prime is 671888994509. The reversal of 671888994500 is 5499888176.

671888994500 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (671888994509) 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, 44968031 + ... + 44982969.

It is an arithmetic number, because the mean of its divisors is an integer number (15388633260).

Almost surely, 2^671888994500 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 671888994500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (738654396480).

671888994500 is an abundant number, since it is smaller than the sum of its proper divisors (805419798460).

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

671888994500 is a wasteful number, since it uses less digits than its factorization.

671888994500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15558 (or 15546 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 65.

The spelling of 671888994500 in words is "six hundred seventy-one billion, eight hundred eighty-eight million, nine hundred ninety-four thousand, five hundred".