8427159426681 has 32 divisors (see below), whose sum is σ = 13220519114880. Its totient is φ = 5287051243008.

The previous prime is 8427159426629. The next prime is 8427159426691. The reversal of 8427159426681 is 1866249517248.

It is a happy number.

8427159426681 is a `hidden beast` number, since 84 + 2 + 7 + 1 + 59 + 426 + 6 + 81 = 666.

It is not a de Polignac number, because 8427159426681 - 2¹⁷ = 8427159295609 is a prime.

It is a super-2 number, since 2×8427159426681² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8427159426691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3217605 + ... + 5216061.

It is an arithmetic number, because the mean of its divisors is an integer number (413141222340).

Almost surely, 2^{8427159426681} is an apocalyptic number.

It is an amenable number.

8427159426681 is a deficient number, since it is larger than the sum of its proper divisors (4793359688199).

8427159426681 is a wasteful number, since it uses less digits than its factorization.

8427159426681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2007670 (or 2007664 counting only the distinct ones).

The product of its digits is 46448640, while the sum is 63.

The spelling of 8427159426681 in words is "eight trillion, four hundred twenty-seven billion, one hundred fifty-nine million, four hundred twenty-six thousand, six hundred eighty-one".