68427889641 has 20 divisors (see below), whose sum is σ = 102241312404. Its totient is φ = 45608832000.

The previous prime is 68427889637. The next prime is 68427889669. The reversal of 68427889641 is 14698872486.

68427889641 is a `hidden beast` number, since 6 + 8 + 427 + 88 + 96 + 41 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 57982232025 + 10445657616 = 240795^2 + 102204^2 .

It is not a de Polignac number, because 68427889641 - 2² = 68427889637 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68427889631) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 300901 + ... + 476861.

Almost surely, 2^68427889641 is an apocalyptic number.

It is an amenable number.

68427889641 is a deficient number, since it is larger than the sum of its proper divisors (33813422763).

68427889641 is a wasteful number, since it uses less digits than its factorization.

68427889641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180774 (or 180765 counting only the distinct ones).

The product of its digits is 37158912, while the sum is 63.

The spelling of 68427889641 in words is "sixty-eight billion, four hundred twenty-seven million, eight hundred eighty-nine thousand, six hundred forty-one".