671348713530 has 128 divisors (see below), whose sum is σ = 1768908430080. Its totient is φ = 161716746240.

The previous prime is 671348713471. The next prime is 671348713573. The reversal of 671348713530 is 35317843176.

It is a self number, because there is not a number n which added to its sum of digits gives 671348713530.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 53887062 + ... + 53899518.

It is an arithmetic number, because the mean of its divisors is an integer number (13819597110).

Almost surely, 2^671348713530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 671348713530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (884454215040).

671348713530 is an abundant number, since it is smaller than the sum of its proper divisors (1097559716550).

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

671348713530 is a wasteful number, since it uses less digits than its factorization.

671348713530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13504.

The product of its (nonzero) digits is 1270080, while the sum is 48.

The spelling of 671348713530 in words is "six hundred seventy-one billion, three hundred forty-eight million, seven hundred thirteen thousand, five hundred thirty".