721473051274 has 8 divisors (see below), whose sum is σ = 1082220380640. Its totient is φ = 360732924396.

The previous prime is 721473051269. The next prime is 721473051289. The reversal of 721473051274 is 472150374127.

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

It is a self number, because there is not a number n which added to its sum of digits gives 721473051274.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1542814 + ... + 1955305.

It is an arithmetic number, because the mean of its divisors is an integer number (135277547580).

Almost surely, 2^721473051274 is an apocalyptic number.

721473051274 is a deficient number, since it is larger than the sum of its proper divisors (360747329366).

721473051274 is a wasteful number, since it uses less digits than its factorization.

721473051274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3601244.

The product of its (nonzero) digits is 329280, while the sum is 43.

The spelling of 721473051274 in words is "seven hundred twenty-one billion, four hundred seventy-three million, fifty-one thousand, two hundred seventy-four".