8426856267081 has 48 divisors (see below), whose sum is σ = 15148095331200. Its totient is φ = 4404599990784.

The previous prime is 8426856267059. The next prime is 8426856267101. The reversal of 8426856267081 is 1807626586248.

8426856267081 is a `hidden beast` number, since 8 + 4 + 2 + 6 + 8 + 562 + 67 + 0 + 8 + 1 = 666.

It is not a de Polignac number, because 8426856267081 - 2¹⁰ = 8426856266057 is a prime.

It is a super-2 number, since 2×8426856267081² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (8426856067081) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 121344256 + ... + 121413681.

It is an arithmetic number, because the mean of its divisors is an integer number (315585319400).

Almost surely, 2^{8426856267081} is an apocalyptic number.

It is an amenable number.

8426856267081 is a deficient number, since it is larger than the sum of its proper divisors (6721239064119).

8426856267081 is a wasteful number, since it uses less digits than its factorization.

8426856267081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242757998 (or 242757995 counting only the distinct ones).

The product of its (nonzero) digits is 61931520, while the sum is 63.

The spelling of 8426856267081 in words is "eight trillion, four hundred twenty-six billion, eight hundred fifty-six million, two hundred sixty-seven thousand, eighty-one".