671207503680 has 1008 divisors, whose sum is σ = 2845253623680. Its totient is φ = 144404176896.

The previous prime is 671207503663. The next prime is 671207503711. The reversal of 671207503680 is 86305702176.

671207503680 is a `hidden beast` number, since 67 + 1 + 2 + 0 + 7 + 503 + 6 + 80 = 666.

It is a tau number, because it is divible by the number of its divisors (1008).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 463860717 + ... + 463862163.

Almost surely, 2^671207503680 is an apocalyptic number.

671207503680 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 671207503680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1422626811840).

671207503680 is an abundant number, since it is smaller than the sum of its proper divisors (2174046120000).

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

671207503680 is a wasteful number, since it uses less digits than its factorization.

671207503680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1676 (or 1656 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 45.

The spelling of 671207503680 in words is "six hundred seventy-one billion, two hundred seven million, five hundred three thousand, six hundred eighty".