81837114469 has 12 divisors (see below), whose sum is σ = 94687573120. Its totient is φ = 70481723400.

The previous prime is 81837114467. The next prime is 81837114479. The reversal of 81837114469 is 96441173818.

It is a happy number.

It is not a de Polignac number, because 81837114469 - 2¹ = 81837114467 is a prime.

It is a super-2 number, since 2×81837114469² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81837114467) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17796117 + ... + 17800714.

Almost surely, 2^81837114469 is an apocalyptic number.

It is an amenable number.

81837114469 is a deficient number, since it is larger than the sum of its proper divisors (12850458651).

81837114469 is a wasteful number, since it uses less digits than its factorization.

81837114469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35596872 (or 35596861 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 52.

The spelling of 81837114469 in words is "eighty-one billion, eight hundred thirty-seven million, one hundred fourteen thousand, four hundred sixty-nine".