68459261897 has 16 divisors (see below), whose sum is σ = 76115665920. Its totient is φ = 61144977600.

The previous prime is 68459261869. The next prime is 68459261903. The reversal of 68459261897 is 79816295486.

It is a cyclic number.

It is not a de Polignac number, because 68459261897 - 2⁸ = 68459261641 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68459261837) 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, 4049372 + ... + 4066242.

It is an arithmetic number, because the mean of its divisors is an integer number (4757229120).

Almost surely, 2^68459261897 is an apocalyptic number.

It is an amenable number.

68459261897 is a deficient number, since it is larger than the sum of its proper divisors (7656404023).

68459261897 is a wasteful number, since it uses less digits than its factorization.

68459261897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26984.

The product of its digits is 52254720, while the sum is 65.

The spelling of 68459261897 in words is "sixty-eight billion, four hundred fifty-nine million, two hundred sixty-one thousand, eight hundred ninety-seven".