68542053584 has 10 divisors (see below), whose sum is σ = 132800228850. Its totient is φ = 34271026784.

The previous prime is 68542053583. The next prime is 68542053589. The reversal of 68542053584 is 48535024586.

It can be written as a sum of positive squares in only one way, i.e., 68210813584 + 331240000 = 261172^2 + 18200^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68542053583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2141939159 + ... + 2141939190.

It is an arithmetic number, because the mean of its divisors is an integer number (13280022885).

Almost surely, 2^68542053584 is an apocalyptic number.

It is an amenable number.

68542053584 is a deficient number, since it is larger than the sum of its proper divisors (64258175266).

68542053584 is a wasteful number, since it uses less digits than its factorization.

68542053584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4283878357 (or 4283878351 counting only the distinct ones).

The product of its (nonzero) digits is 4608000, while the sum is 50.

The spelling of 68542053584 in words is "sixty-eight billion, five hundred forty-two million, fifty-three thousand, five hundred eighty-four".