72134449202687 has 2 divisors, whose sum is σ = 72134449202688. Its totient is φ = 72134449202686.

The previous prime is 72134449202681. The next prime is 72134449202719. The reversal of 72134449202687 is 78620294443127.

It is a weak prime.

It is an emirp because it is prime and its reverse (78620294443127) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72134449202687 - 2³⁴ = 72117269333503 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72134449202681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36067224601343 + 36067224601344.

It is an arithmetic number, because the mean of its divisors is an integer number (36067224601344).

Almost surely, 2^{72134449202687} is an apocalyptic number.

72134449202687 is a deficient number, since it is larger than the sum of its proper divisors (1).

72134449202687 is an equidigital number, since it uses as much as digits as its factorization.

72134449202687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32514048, while the sum is 59.

The spelling of 72134449202687 in words is "seventy-two trillion, one hundred thirty-four billion, four hundred forty-nine million, two hundred two thousand, six hundred eighty-seven".