84259167997 has 2 divisors, whose sum is σ = 84259167998. Its totient is φ = 84259167996.

The previous prime is 84259167973. The next prime is 84259168039. The reversal of 84259167997 is 79976195248.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67436818596 + 16822349401 = 259686^2 + 129701^2 .

It is a cyclic number.

It is not a de Polignac number, because 84259167997 - 2⁷ = 84259167869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84259167917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42129583998 + 42129583999.

It is an arithmetic number, because the mean of its divisors is an integer number (42129583999).

Almost surely, 2^84259167997 is an apocalyptic number.

It is an amenable number.

84259167997 is a deficient number, since it is larger than the sum of its proper divisors (1).

84259167997 is an equidigital number, since it uses as much as digits as its factorization.

84259167997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 68584320, while the sum is 67.

The spelling of 84259167997 in words is "eighty-four billion, two hundred fifty-nine million, one hundred sixty-seven thousand, nine hundred ninety-seven".