81422322322419 has 64 divisors (see below), whose sum is σ = 137548769863680. Its totient is φ = 47157682014720.

The previous prime is 81422322322403. The next prime is 81422322322433. The reversal of 81422322322419 is 91422322322418.

81422322322419 is a `hidden beast` number, since 8 + 1 + 4 + 2 + 2 + 3 + 223 + 2 + 2 + 419 = 666.

81422322322419 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 81422322322419 - 2⁴ = 81422322322403 is a prime.

It is a super-2 number, since 2×81422322322419² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (81422322322459) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 389343654 + ... + 389552724.

It is an arithmetic number, because the mean of its divisors is an integer number (2149199529120).

Almost surely, 2^{81422322322419} is an apocalyptic number.

81422322322419 is a deficient number, since it is larger than the sum of its proper divisors (56126447541261).

81422322322419 is a wasteful number, since it uses less digits than its factorization.

81422322322419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274377 (or 274371 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

Subtracting 81422322322419 from its reverse (91422322322418), we obtain a palindrome (9999999999999).

The spelling of 81422322322419 in words is "eighty-one trillion, four hundred twenty-two billion, three hundred twenty-two million, three hundred twenty-two thousand, four hundred nineteen".