72043673089 has 4 divisors (see below), whose sum is σ = 72298244656. Its totient is φ = 71789101524.

The previous prime is 72043673071. The next prime is 72043673113. The reversal of 72043673089 is 98037634027.

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 72043673089 - 2¹⁵ = 72043640321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72043673059) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127285359 + ... + 127285924.

It is an arithmetic number, because the mean of its divisors is an integer number (18074561164).

Almost surely, 2^72043673089 is an apocalyptic number.

It is an amenable number.

72043673089 is a deficient number, since it is larger than the sum of its proper divisors (254571567).

72043673089 is a wasteful number, since it uses less digits than its factorization.

72043673089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254571566.

The product of its (nonzero) digits is 1524096, while the sum is 49.

The spelling of 72043673089 in words is "seventy-two billion, forty-three million, six hundred seventy-three thousand, eighty-nine".