72793616489 has 4 divisors (see below), whose sum is σ = 79411218000. Its totient is φ = 66176014980.

The previous prime is 72793616453. The next prime is 72793616507. The reversal of 72793616489 is 98461639727.

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 a de Polignac number, because none of the positive numbers 2^k-72793616489 is a prime.

It is a super-2 number, since 2×72793616489² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72793616789) 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, 3308800739 + ... + 3308800760.

It is an arithmetic number, because the mean of its divisors is an integer number (19852804500).

Almost surely, 2^72793616489 is an apocalyptic number.

It is an amenable number.

72793616489 is a deficient number, since it is larger than the sum of its proper divisors (6617601511).

72793616489 is a wasteful number, since it uses less digits than its factorization.

72793616489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6617601510.

The product of its digits is 27433728, while the sum is 62.

The spelling of 72793616489 in words is "seventy-two billion, seven hundred ninety-three million, six hundred sixteen thousand, four hundred eighty-nine".