72605387206091 has 2 divisors, whose sum is σ = 72605387206092. Its totient is φ = 72605387206090.

The previous prime is 72605387205983. The next prime is 72605387206123. The reversal of 72605387206091 is 19060278350627.

It is a strong prime.

It is an emirp because it is prime and its reverse (19060278350627) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 72605387206091 - 2¹⁰ = 72605387205067 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (72605387206291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36302693603045 + 36302693603046.

It is an arithmetic number, because the mean of its divisors is an integer number (36302693603046).

Almost surely, 2^{72605387206091} is an apocalyptic number.

72605387206091 is a deficient number, since it is larger than the sum of its proper divisors (1).

72605387206091 is an equidigital number, since it uses as much as digits as its factorization.

72605387206091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7620480, while the sum is 56.

The spelling of 72605387206091 in words is "seventy-two trillion, six hundred five billion, three hundred eighty-seven million, two hundred six thousand, ninety-one".