72168034213 has 16 divisors (see below), whose sum is σ = 80636973120. Its totient is φ = 64035100800.

The previous prime is 72168034199. The next prime is 72168034223. The reversal of 72168034213 is 31243086127.

It is a happy number.

It is not a de Polignac number, because 72168034213 - 2²¹ = 72165937061 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72168034223) by changing a digit.

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 in 15 ways as a sum of consecutive naturals, for example, 368848 + ... + 529513.

It is an arithmetic number, because the mean of its divisors is an integer number (5039810820).

Almost surely, 2^72168034213 is an apocalyptic number.

It is an amenable number.

72168034213 is a deficient number, since it is larger than the sum of its proper divisors (8468938907).

72168034213 is a wasteful number, since it uses less digits than its factorization.

72168034213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898548.

The product of its (nonzero) digits is 48384, while the sum is 37.

The spelling of 72168034213 in words is "seventy-two billion, one hundred sixty-eight million, thirty-four thousand, two hundred thirteen".