81803127331276 has 24 divisors (see below), whose sum is σ = 154167695860640. Its totient is φ = 37755224986752.

The previous prime is 81803127331271. The next prime is 81803127331309. The reversal of 81803127331276 is 67213372130818.

81803127331276 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is not an unprimeable number, because it can be changed into a prime (81803127331271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43787185 + ... + 45617143.

Almost surely, 2^{81803127331276} is an apocalyptic number.

It is an amenable number.

81803127331276 is a deficient number, since it is larger than the sum of its proper divisors (72364568529364).

81803127331276 is a wasteful number, since it uses less digits than its factorization.

81803127331276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2689633 (or 2689631 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 52.

The spelling of 81803127331276 in words is "eighty-one trillion, eight hundred three billion, one hundred twenty-seven million, three hundred thirty-one thousand, two hundred seventy-six".