72366608993 has 4 divisors (see below), whose sum is σ = 82704696000. Its totient is φ = 62028521988.

The previous prime is 72366608987. The next prime is 72366608999. The reversal of 72366608993 is 39980666327.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (72366608987) and next prime (72366608999).

It is a cyclic number.

It is not a de Polignac number, because 72366608993 - 2⁸ = 72366608737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72366608999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5169043493 + ... + 5169043506.

It is an arithmetic number, because the mean of its divisors is an integer number (20676174000).

Almost surely, 2^72366608993 is an apocalyptic number.

It is an amenable number.

72366608993 is a deficient number, since it is larger than the sum of its proper divisors (10338087007).

72366608993 is a wasteful number, since it uses less digits than its factorization.

72366608993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10338087006.

The product of its (nonzero) digits is 17635968, while the sum is 59.

The spelling of 72366608993 in words is "seventy-two billion, three hundred sixty-six million, six hundred eight thousand, nine hundred ninety-three".