68524465221 has 12 divisors (see below), whose sum is σ = 98983935648. Its totient is φ = 45681060264.

The previous prime is 68524465199. The next prime is 68524465231. The reversal of 68524465221 is 12256442586.

68524465221 is a `hidden beast` number, since 6 + 85 + 2 + 4 + 46 + 522 + 1 = 666.

68524465221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 68524465221 - 2⁶ = 68524465157 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68524465231) 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, 86746 + ... + 380228.

It is an arithmetic number, because the mean of its divisors is an integer number (8248661304).

Almost surely, 2^68524465221 is an apocalyptic number.

It is an amenable number.

68524465221 is a deficient number, since it is larger than the sum of its proper divisors (30459470427).

68524465221 is a wasteful number, since it uses less digits than its factorization.

68524465221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 319432 (or 319429 counting only the distinct ones).

The product of its digits is 921600, while the sum is 45.

The spelling of 68524465221 in words is "sixty-eight billion, five hundred twenty-four million, four hundred sixty-five thousand, two hundred twenty-one".