72224036867 has 4 divisors (see below), whose sum is σ = 72232756296. Its totient is φ = 72215317440.

The previous prime is 72224036851. The next prime is 72224036879. The reversal of 72224036867 is 76863042227.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 72224036867 - 2⁴ = 72224036851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72224036827) 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, 4347278 + ... + 4363859.

It is an arithmetic number, because the mean of its divisors is an integer number (18058189074).

Almost surely, 2^72224036867 is an apocalyptic number.

72224036867 is a deficient number, since it is larger than the sum of its proper divisors (8719429).

72224036867 is an equidigital number, since it uses as much as digits as its factorization.

72224036867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8719428.

The product of its (nonzero) digits is 1354752, while the sum is 47.

The spelling of 72224036867 in words is "seventy-two billion, two hundred twenty-four million, thirty-six thousand, eight hundred sixty-seven".