84109667049 has 6 divisors (see below), whose sum is σ = 121491741306. Its totient is φ = 56073111360.

The previous prime is 84109666999. The next prime is 84109667051. The reversal of 84109667049 is 94076690148.

It can be written as a sum of positive squares in only one way, i.e., 81857215449 + 2252451600 = 286107^2 + 47460^2 .

It is not a de Polignac number, because 84109667049 - 2⁸ = 84109666793 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84109666986 and 84109667004.

It is not an unprimeable number, because it can be changed into a prime (84109667069) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4672759272 + ... + 4672759289.

It is an arithmetic number, because the mean of its divisors is an integer number (20248623551).

Almost surely, 2^84109667049 is an apocalyptic number.

It is an amenable number.

84109667049 is a deficient number, since it is larger than the sum of its proper divisors (37382074257).

84109667049 is a wasteful number, since it uses less digits than its factorization.

84109667049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9345518567 (or 9345518564 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 84109667049 in words is "eighty-four billion, one hundred nine million, six hundred sixty-seven thousand, forty-nine".