84571223049 has 12 divisors (see below), whose sum is σ = 122978290500. Its totient is φ = 56002419744.

The previous prime is 84571222997. The next prime is 84571223081. The reversal of 84571223049 is 94032217548.

84571223049 is a `hidden beast` number, since 8 + 4 + 571 + 2 + 2 + 30 + 49 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 38457955449 + 46113267600 = 196107^2 + 214740^2 .

It is not a de Polignac number, because 84571223049 - 2¹³ = 84571214857 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84571222995 and 84571223013.

It is not an unprimeable number, because it can be changed into a prime (84571223089) by changing a digit.

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, 31531554 + ... + 31534235.

It is an arithmetic number, because the mean of its divisors is an integer number (10248190875).

Almost surely, 2^84571223049 is an apocalyptic number.

It is an amenable number.

84571223049 is a deficient number, since it is larger than the sum of its proper divisors (38407067451).

84571223049 is a wasteful number, since it uses less digits than its factorization.

84571223049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63065944 (or 63065941 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 84571223049 in words is "eighty-four billion, five hundred seventy-one million, two hundred twenty-three thousand, forty-nine".