81053944362 has 24 divisors (see below), whose sum is σ = 175696322724. Its totient is φ = 27005759424.

The previous prime is 81053944357. The next prime is 81053944459. The reversal of 81053944362 is 26344935018.

81053944362 is a `hidden beast` number, since 8 + 10 + 539 + 4 + 43 + 62 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 71598521241 + 9455423121 = 267579^2 + 97239^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 977563 + ... + 1057230.

Almost surely, 2^81053944362 is an apocalyptic number.

81053944362 is an abundant number, since it is smaller than the sum of its proper divisors (94642378362).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

81053944362 is a wasteful number, since it uses less digits than its factorization.

81053944362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2037014 (or 2037011 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 45.

The spelling of 81053944362 in words is "eighty-one billion, fifty-three million, nine hundred forty-four thousand, three hundred sixty-two".