81426134283 has 16 divisors (see below), whose sum is σ = 120691178496. Its totient is φ = 48491989920.

The previous prime is 81426134269. The next prime is 81426134287. The reversal of 81426134283 is 38243162418.

It is not a de Polignac number, because 81426134283 - 2²⁴ = 81409357067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (81426134287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33673785 + ... + 33676202.

It is an arithmetic number, because the mean of its divisors is an integer number (7543198656).

Almost surely, 2^81426134283 is an apocalyptic number.

81426134283 is a deficient number, since it is larger than the sum of its proper divisors (39265044213).

81426134283 is a wasteful number, since it uses less digits than its factorization.

81426134283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67350034.

The product of its digits is 221184, while the sum is 42.

The spelling of 81426134283 in words is "eighty-one billion, four hundred twenty-six million, one hundred thirty-four thousand, two hundred eighty-three".