72628216689 has 8 divisors (see below), whose sum is σ = 110671568320. Its totient is φ = 41501838096.

The previous prime is 72628216681. The next prime is 72628216691. The reversal of 72628216689 is 98661282627.

It is a happy number.

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

It is not a de Polignac number, because 72628216689 - 2³ = 72628216681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72628216681) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1729243234 + ... + 1729243275.

It is an arithmetic number, because the mean of its divisors is an integer number (13833946040).

Almost surely, 2^72628216689 is an apocalyptic number.

It is an amenable number.

72628216689 is a deficient number, since it is larger than the sum of its proper divisors (38043351631).

72628216689 is a wasteful number, since it uses less digits than its factorization.

72628216689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3458486519.

The product of its digits is 6967296, while the sum is 57.

The spelling of 72628216689 in words is "seventy-two billion, six hundred twenty-eight million, two hundred sixteen thousand, six hundred eighty-nine".