72164446126 has 4 divisors (see below), whose sum is σ = 108246669192. Its totient is φ = 36082223062.

The previous prime is 72164446111. The next prime is 72164446141. The reversal of 72164446126 is 62164446127.

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

It is an interprime number because it is at equal distance from previous prime (72164446111) and next prime (72164446141).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18041111530 + ... + 18041111533.

It is an arithmetic number, because the mean of its divisors is an integer number (27061667298).

Almost surely, 2^72164446126 is an apocalyptic number.

72164446126 is a deficient number, since it is larger than the sum of its proper divisors (36082223066).

72164446126 is a wasteful number, since it uses less digits than its factorization.

72164446126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36082223065.

The product of its digits is 387072, while the sum is 43.

Subtracting from 72164446126 its reverse (62164446127), we obtain a palindrome (9999999999).

The spelling of 72164446126 in words is "seventy-two billion, one hundred sixty-four million, four hundred forty-six thousand, one hundred twenty-six".