77270655226247 has 12 divisors (see below), whose sum is σ = 92315792259600. Its totient is φ = 63352338443328.

The previous prime is 77270655226223. The next prime is 77270655226309. The reversal of 77270655226247 is 74262255607277.

It is not a de Polignac number, because 77270655226247 - 2⁸ = 77270655225991 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 77270655226247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77270655226547) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10433517122 + ... + 10433524527.

It is an arithmetic number, because the mean of its divisors is an integer number (7692982688300).

Almost surely, 2^{77270655226247} is an apocalyptic number.

77270655226247 is a deficient number, since it is larger than the sum of its proper divisors (15045137033353).

77270655226247 is a wasteful number, since it uses less digits than its factorization.

77270655226247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20867041702 (or 20867041679 counting only the distinct ones).

The product of its (nonzero) digits is 138297600, while the sum is 62.

The spelling of 77270655226247 in words is "seventy-seven trillion, two hundred seventy billion, six hundred fifty-five million, two hundred twenty-six thousand, two hundred forty-seven".