72312102209 has 8 divisors (see below), whose sum is σ = 73579081920. Its totient is φ = 71046500976.

The previous prime is 72312102199. The next prime is 72312102221. The reversal of 72312102209 is 90220121327.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72312102209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72312102509) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238502 + ... + 448895.

It is an arithmetic number, because the mean of its divisors is an integer number (9197385240).

Almost surely, 2^72312102209 is an apocalyptic number.

It is an amenable number.

72312102209 is a deficient number, since it is larger than the sum of its proper divisors (1266979711).

72312102209 is a wasteful number, since it uses less digits than its factorization.

72312102209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 689239.

The product of its (nonzero) digits is 3024, while the sum is 29.

The spelling of 72312102209 in words is "seventy-two billion, three hundred twelve million, one hundred two thousand, two hundred nine".