671732370320 has 80 divisors (see below), whose sum is σ = 1793429052480. Its totient is φ = 231410188800.

The previous prime is 671732370289. The next prime is 671732370403. The reversal of 671732370320 is 23073237176.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20070971 + ... + 20104410.

It is an arithmetic number, because the mean of its divisors is an integer number (22417863156).

Almost surely, 2^671732370320 is an apocalyptic number.

It is an amenable number.

671732370320 is an abundant number, since it is smaller than the sum of its proper divisors (1121696682160).

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

671732370320 is a wasteful number, since it uses less digits than its factorization.

671732370320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40175424 (or 40175418 counting only the distinct ones).

The product of its (nonzero) digits is 222264, while the sum is 41.

The spelling of 671732370320 in words is "six hundred seventy-one billion, seven hundred thirty-two million, three hundred seventy thousand, three hundred twenty".