68556977247 has 16 divisors (see below), whose sum is σ = 99739618560. Its totient is φ = 41541192000.

The previous prime is 68556977233. The next prime is 68556977257. The reversal of 68556977247 is 74277965586.

It is not a de Polignac number, because 68556977247 - 2⁴ = 68556977231 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68556977207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46422 + ... + 373187.

It is an arithmetic number, because the mean of its divisors is an integer number (6233726160).

Almost surely, 2^68556977247 is an apocalyptic number.

68556977247 is a deficient number, since it is larger than the sum of its proper divisors (31182641313).

68556977247 is a wasteful number, since it uses less digits than its factorization.

68556977247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424574.

The product of its digits is 177811200, while the sum is 66.

The spelling of 68556977247 in words is "sixty-eight billion, five hundred fifty-six million, nine hundred seventy-seven thousand, two hundred forty-seven".