72223838867 has 4 divisors (see below), whose sum is σ = 72258414360. Its totient is φ = 72189263376.

The previous prime is 72223838833. The next prime is 72223838909. The reversal of 72223838867 is 76883832227.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 76883832227 = 419 ⋅183493633.

It is a cyclic number.

It is not a de Polignac number, because 72223838867 - 2¹⁸ = 72223576723 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72223838567) 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, 17284613 + ... + 17288790.

It is an arithmetic number, because the mean of its divisors is an integer number (18064603590).

Almost surely, 2^72223838867 is an apocalyptic number.

72223838867 is a deficient number, since it is larger than the sum of its proper divisors (34575493).

72223838867 is a wasteful number, since it uses less digits than its factorization.

72223838867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34575492.

The product of its digits is 10838016, while the sum is 56.

The spelling of 72223838867 in words is "seventy-two billion, two hundred twenty-three million, eight hundred thirty-eight thousand, eight hundred sixty-seven".