72134449202719 has 2 divisors, whose sum is σ = 72134449202720. Its totient is φ = 72134449202718.

The previous prime is 72134449202687. The next prime is 72134449202831. The reversal of 72134449202719 is 91720294443127.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72134449202719 - 2⁵ = 72134449202687 is a prime.

It is a super-2 number, since 2×72134449202719² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 72134449202719.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72134449202219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36067224601359 + 36067224601360.

It is an arithmetic number, because the mean of its divisors is an integer number (36067224601360).

Almost surely, 2^{72134449202719} is an apocalyptic number.

72134449202719 is a deficient number, since it is larger than the sum of its proper divisors (1).

72134449202719 is an equidigital number, since it uses as much as digits as its factorization.

72134449202719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6096384, while the sum is 55.

The spelling of 72134449202719 in words is "seventy-two trillion, one hundred thirty-four billion, four hundred forty-nine million, two hundred two thousand, seven hundred nineteen".