81534286041 has 32 divisors (see below), whose sum is σ = 126844502400. Its totient is φ = 46125241344.

The previous prime is 81534286033. The next prime is 81534286051. The reversal of 81534286041 is 14068243518.

It is a happy number.

It is not a de Polignac number, because 81534286041 - 2³ = 81534286033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 81534285984 and 81534286002.

It is not an unprimeable number, because it can be changed into a prime (81534286051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1401466 + ... + 1458483.

It is an arithmetic number, because the mean of its divisors is an integer number (3963890700).

Almost surely, 2^81534286041 is an apocalyptic number.

It is an amenable number.

81534286041 is a deficient number, since it is larger than the sum of its proper divisors (45310216359).

81534286041 is a wasteful number, since it uses less digits than its factorization.

81534286041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2860025.

The product of its (nonzero) digits is 184320, while the sum is 42.

The spelling of 81534286041 in words is "eighty-one billion, five hundred thirty-four million, two hundred eighty-six thousand, forty-one".