2172238112767 has 2 divisors, whose sum is σ = 2172238112768. Its totient is φ = 2172238112766.

The previous prime is 2172238112731. The next prime is 2172238112777. The reversal of 2172238112767 is 7672118322712.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2172238112767 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2172238112767.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2172238112717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086119056383 + 1086119056384.

It is an arithmetic number, because the mean of its divisors is an integer number (1086119056384).

Almost surely, 2^{2172238112767} is an apocalyptic number.

2172238112767 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172238112767 is an equidigital number, since it uses as much as digits as its factorization.

2172238112767 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 790272, while the sum is 49.

The spelling of 2172238112767 in words is "two trillion, one hundred seventy-two billion, two hundred thirty-eight million, one hundred twelve thousand, seven hundred sixty-seven".