79720000133 has 4 divisors (see below), whose sum is σ = 79737537120. Its totient is φ = 79702463148.

The previous prime is 79720000123. The next prime is 79720000169. The reversal of 79720000133 is 33100002797.

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 a cyclic number.

It is not a de Polignac number, because 79720000133 - 2⁶ = 79720000069 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 79720000133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79720000123) 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 3 ways as a sum of consecutive naturals, for example, 8761673 + ... + 8770766.

It is an arithmetic number, because the mean of its divisors is an integer number (19934384280).

Almost surely, 2^79720000133 is an apocalyptic number.

It is an amenable number.

79720000133 is a deficient number, since it is larger than the sum of its proper divisors (17536987).

79720000133 is a wasteful number, since it uses less digits than its factorization.

79720000133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17536986.

The product of its (nonzero) digits is 7938, while the sum is 32.

The spelling of 79720000133 in words is "seventy-nine billion, seven hundred twenty million, one hundred thirty-three", and thus it is an aban number.