84605271129 has 12 divisors (see below), whose sum is σ = 122570252116. Its totient is φ = 56236142592.

The previous prime is 84605271103. The next prime is 84605271143. The reversal of 84605271129 is 92117250648.

84605271129 is a `hidden beast` number, since 8 + 4 + 6 + 0 + 527 + 112 + 9 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 41487579225 + 43117691904 = 203685^2 + 207648^2 .

It is not a de Polignac number, because 84605271129 - 2⁷ = 84605271001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84605271229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13944424 + ... + 13950489.

Almost surely, 2^84605271129 is an apocalyptic number.

It is an amenable number.

84605271129 is a deficient number, since it is larger than the sum of its proper divisors (37964980987).

84605271129 is a wasteful number, since it uses less digits than its factorization.

84605271129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27895256 (or 27895253 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 84605271129 in words is "eighty-four billion, six hundred five million, two hundred seventy-one thousand, one hundred twenty-nine".