7872247778233 has 2 divisors, whose sum is σ = 7872247778234. Its totient is φ = 7872247778232.

The previous prime is 7872247778207. The next prime is 7872247778249. The reversal of 7872247778233 is 3328777422787.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6465587733504 + 1406660044729 = 2542752^2 + 1186027^2 .

It is an emirp because it is prime and its reverse (3328777422787) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7872247778233 is a prime.

It is not a weakly prime, because it can be changed into another prime (7872242778233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3936123889116 + 3936123889117.

It is an arithmetic number, because the mean of its divisors is an integer number (3936123889117).

Almost surely, 2^{7872247778233} is an apocalyptic number.

It is an amenable number.

7872247778233 is a deficient number, since it is larger than the sum of its proper divisors (1).

7872247778233 is an equidigital number, since it uses as much as digits as its factorization.

7872247778233 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 309786624, while the sum is 67.

The spelling of 7872247778233 in words is "seven trillion, eight hundred seventy-two billion, two hundred forty-seven million, seven hundred seventy-eight thousand, two hundred thirty-three".