671819530940 has 24 divisors (see below), whose sum is σ = 1448951314272. Its totient is φ = 261464898240.

The previous prime is 671819530933. The next prime is 671819530969. The reversal of 671819530940 is 49035918176.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 453931376 + ... + 453932855.

It is an arithmetic number, because the mean of its divisors is an integer number (60372971428).

Almost surely, 2^671819530940 is an apocalyptic number.

It is an amenable number.

671819530940 is an abundant number, since it is smaller than the sum of its proper divisors (777131783332).

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

671819530940 is a wasteful number, since it uses less digits than its factorization.

671819530940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907864277 (or 907864275 counting only the distinct ones).

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 671819530940 in words is "six hundred seventy-one billion, eight hundred nineteen million, five hundred thirty thousand, nine hundred forty".