68834598721 has 12 divisors (see below), whose sum is σ = 80240094720. Its totient is φ = 58877889000.

The previous prime is 68834598709. The next prime is 68834598727. The reversal of 68834598721 is 12789543886.

It is not a de Polignac number, because 68834598721 - 2¹³ = 68834590529 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 68834598721.

It is not an unprimeable number, because it can be changed into a prime (68834598727) 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, 1442905 + ... + 1489846.

It is an arithmetic number, because the mean of its divisors is an integer number (6686674560).

Almost surely, 2^68834598721 is an apocalyptic number.

It is an amenable number.

68834598721 is a deficient number, since it is larger than the sum of its proper divisors (11405495999).

68834598721 is a wasteful number, since it uses less digits than its factorization.

68834598721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2933244 (or 2933237 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 61.

The spelling of 68834598721 in words is "sixty-eight billion, eight hundred thirty-four million, five hundred ninety-eight thousand, seven hundred twenty-one".