72641434222 has 32 divisors (see below), whose sum is σ = 127950211008. Its totient is φ = 30277276416.

The previous prime is 72641434213. The next prime is 72641434279. The reversal of 72641434222 is 22243414627.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1191178 + ... + 1250674.

It is an arithmetic number, because the mean of its divisors is an integer number (3998444094).

Almost surely, 2^72641434222 is an apocalyptic number.

72641434222 is a deficient number, since it is larger than the sum of its proper divisors (55308776786).

72641434222 is a wasteful number, since it uses less digits than its factorization.

72641434222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61900.

The product of its digits is 129024, while the sum is 37.

Adding to 72641434222 its reverse (22243414627), we get a palindrome (94884848849).

The spelling of 72641434222 in words is "seventy-two billion, six hundred forty-one million, four hundred thirty-four thousand, two hundred twenty-two".