68386813415442 has 24 divisors (see below), whose sum is σ = 148221605758044. Its totient is φ = 22787884980864.

The previous prime is 68386813415441. The next prime is 68386813415449. The reversal of 68386813415442 is 24451431868386.

68386813415442 is a `hidden beast` number, since 6 + 8 + 3 + 8 + 6 + 81 + 3 + 4 + 1 + 544 + 2 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 66089924644041 + 2296888771401 = 8129571^2 + 1515549^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 68386813415442.

It is not an unprimeable number, because it can be changed into a prime (68386813415441) 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, 643236283 + ... + 643342590.

Almost surely, 2^{68386813415442} is an apocalyptic number.

68386813415442 is an abundant number, since it is smaller than the sum of its proper divisors (79834792342602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68386813415442 is a wasteful number, since it uses less digits than its factorization.

68386813415442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286581834 (or 1286581831 counting only the distinct ones).

The product of its digits is 106168320, while the sum is 63.

The spelling of 68386813415442 in words is "sixty-eight trillion, three hundred eighty-six billion, eight hundred thirteen million, four hundred fifteen thousand, four hundred forty-two".