72186430822 has 32 divisors (see below), whose sum is σ = 119585289600. Its totient is φ = 32406150720.

The previous prime is 72186430807. The next prime is 72186430843. The reversal of 72186430822 is 22803468127.

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, 9306898 + ... + 9314650.

It is an arithmetic number, because the mean of its divisors is an integer number (3737040300).

Almost surely, 2^72186430822 is an apocalyptic number.

72186430822 is a deficient number, since it is larger than the sum of its proper divisors (47398858778).

72186430822 is a wasteful number, since it uses less digits than its factorization.

72186430822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12948.

The product of its (nonzero) digits is 258048, while the sum is 43.

Adding to 72186430822 its reverse (22803468127), we get a palindrome (94989898949).

The spelling of 72186430822 in words is "seventy-two billion, one hundred eighty-six million, four hundred thirty thousand, eight hundred twenty-two".