68469544221 has 16 divisors (see below), whose sum is σ = 98319943680. Its totient is φ = 42133089600.

The previous prime is 68469544217. The next prime is 68469544249. The reversal of 68469544221 is 12244596486.

It is not a de Polignac number, because 68469544221 - 2² = 68469544217 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68469544291) 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, 1520295 + ... + 1564683.

It is an arithmetic number, because the mean of its divisors is an integer number (6144996480).

Almost surely, 2^68469544221 is an apocalyptic number.

It is an amenable number.

68469544221 is a deficient number, since it is larger than the sum of its proper divisors (29850399459).

68469544221 is a wasteful number, since it uses less digits than its factorization.

68469544221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83956.

The product of its digits is 3317760, while the sum is 51.

The spelling of 68469544221 in words is "sixty-eight billion, four hundred sixty-nine million, five hundred forty-four thousand, two hundred twenty-one".