72205087187 has 2 divisors, whose sum is σ = 72205087188. Its totient is φ = 72205087186.

The previous prime is 72205087181. The next prime is 72205087217. The reversal of 72205087187 is 78178050227.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 72205087187 - 2¹⁴ = 72205070803 is a prime.

It is not a weakly prime, because it can be changed into another prime (72205087181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36102543593 + 36102543594.

It is an arithmetic number, because the mean of its divisors is an integer number (36102543594).

Almost surely, 2^72205087187 is an apocalyptic number.

72205087187 is a deficient number, since it is larger than the sum of its proper divisors (1).

72205087187 is an equidigital number, since it uses as much as digits as its factorization.

72205087187 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 439040, while the sum is 47.

The spelling of 72205087187 in words is "seventy-two billion, two hundred five million, eighty-seven thousand, one hundred eighty-seven".