72351321346 has 16 divisors (see below), whose sum is σ = 108830329920. Its totient is φ = 36074587120.

The previous prime is 72351321209. The next prime is 72351321373. The reversal of 72351321346 is 64312315327.

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, 5042835 + ... + 5057161.

It is an arithmetic number, because the mean of its divisors is an integer number (6801895620).

Almost surely, 2^72351321346 is an apocalyptic number.

72351321346 is a deficient number, since it is larger than the sum of its proper divisors (36479008574).

72351321346 is a wasteful number, since it uses less digits than its factorization.

72351321346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21209.

The product of its digits is 90720, while the sum is 37.

The spelling of 72351321346 in words is "seventy-two billion, three hundred fifty-one million, three hundred twenty-one thousand, three hundred forty-six".