68102563599 has 48 divisors (see below), whose sum is σ = 116541255168. Its totient is φ = 37509967296.

The previous prime is 68102563579. The next prime is 68102563631. The reversal of 68102563599 is 99536520186.

It is a happy number.

68102563599 is a `hidden beast` number, since 68 + 10 + 2 + 563 + 5 + 9 + 9 = 666.

It is not a de Polignac number, because 68102563599 - 2¹⁹ = 68102039311 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68102563519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 112894 + ... + 385940.

It is an arithmetic number, because the mean of its divisors is an integer number (2427942816).

Almost surely, 2^68102563599 is an apocalyptic number.

68102563599 is a deficient number, since it is larger than the sum of its proper divisors (48438691569).

68102563599 is a wasteful number, since it uses less digits than its factorization.

68102563599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273204 (or 273201 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 54.

The spelling of 68102563599 in words is "sixty-eight billion, one hundred two million, five hundred sixty-three thousand, five hundred ninety-nine".