84849367261 has 2 divisors, whose sum is σ = 84849367262. Its totient is φ = 84849367260.

The previous prime is 84849367219. The next prime is 84849367277. The reversal of 84849367261 is 16276394848.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67265016025 + 17584351236 = 259355^2 + 132606^2 .

It is a cyclic number.

It is not a de Polignac number, because 84849367261 - 2⁷ = 84849367133 is a prime.

It is a super-4 number, since 4×84849367261⁴ (a number of 45 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 84849367196 and 84849367205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84849367061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42424683630 + 42424683631.

It is an arithmetic number, because the mean of its divisors is an integer number (42424683631).

Almost surely, 2^84849367261 is an apocalyptic number.

It is an amenable number.

84849367261 is a deficient number, since it is larger than the sum of its proper divisors (1).

84849367261 is an equidigital number, since it uses as much as digits as its factorization.

84849367261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13934592, while the sum is 58.

The spelling of 84849367261 in words is "eighty-four billion, eight hundred forty-nine million, three hundred sixty-seven thousand, two hundred sixty-one".