12720373805 has 8 divisors (see below), whose sum is σ = 15332900352. Its totient is φ = 10130664528.

The previous prime is 12720373781. The next prime is 12720373823. The reversal of 12720373805 is 50837302721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12720373805 - 2⁶ = 12720373741 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5703089 + ... + 5705318.

It is an arithmetic number, because the mean of its divisors is an integer number (1916612544).

Almost surely, 2^12720373805 is an apocalyptic number.

It is an amenable number.

12720373805 is a deficient number, since it is larger than the sum of its proper divisors (2612526547).

12720373805 is a wasteful number, since it uses less digits than its factorization.

12720373805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11408635.

The product of its (nonzero) digits is 70560, while the sum is 38.

The spelling of 12720373805 in words is "twelve billion, seven hundred twenty million, three hundred seventy-three thousand, eight hundred five".