671439403008 has 432 divisors, whose sum is σ = 2159483737320. Its totient is φ = 199272038400.

The previous prime is 671439403003. The next prime is 671439403043. The reversal of 671439403008 is 800304934176.

It is a super-3 number, since 3×671439403008³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671439403003) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2881714060 + ... + 2881714292.

Almost surely, 2^671439403008 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 671439403008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1079741868660).

671439403008 is an abundant number, since it is smaller than the sum of its proper divisors (1488044334312).

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

671439403008 is a wasteful number, since it uses less digits than its factorization.

671439403008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 566 (or 310 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The spelling of 671439403008 in words is "six hundred seventy-one billion, four hundred thirty-nine million, four hundred three thousand, eight".