84071807117 has 4 divisors (see below), whose sum is σ = 84938526876. Its totient is φ = 83205087360.

The previous prime is 84071807093. The next prime is 84071807153. The reversal of 84071807117 is 71170817048.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 67270721956 + 16801085161 = 259366^2 + 129619^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84071807117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84071107117) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 433359734 + ... + 433359927.

It is an arithmetic number, because the mean of its divisors is an integer number (21234631719).

Almost surely, 2^84071807117 is an apocalyptic number.

It is an amenable number.

84071807117 is a deficient number, since it is larger than the sum of its proper divisors (866719759).

84071807117 is an equidigital number, since it uses as much as digits as its factorization.

84071807117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866719758.

The product of its (nonzero) digits is 87808, while the sum is 44.

The spelling of 84071807117 in words is "eighty-four billion, seventy-one million, eight hundred seven thousand, one hundred seventeen".