671196564904320 has 2304 divisors, whose sum is σ = 2993255624923200. Its totient is φ = 137304558010368.

The previous prime is 671196564904279. The next prime is 671196564904339. The reversal of 671196564904320 is 23409465691176.

It is a happy number.

671196564904320 is a `hidden beast` number, since 6 + 7 + 1 + 1 + 9 + 6 + 564 + 9 + 0 + 43 + 20 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 287 ways as a sum of consecutive naturals, for example, 15802878604 + ... + 15802921076.

Almost surely, 2^{671196564904320} is an apocalyptic number.

671196564904320 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671196564904320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1496627812461600).

671196564904320 is an abundant number, since it is smaller than the sum of its proper divisors (2322059060018880).

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

671196564904320 is a wasteful number, since it uses less digits than its factorization.

671196564904320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42657 (or 42635 counting only the distinct ones).

The product of its (nonzero) digits is 58786560, while the sum is 63.

The spelling of 671196564904320 in words is "six hundred seventy-one trillion, one hundred ninety-six billion, five hundred sixty-four million, nine hundred four thousand, three hundred twenty".