84700226509 has 2 divisors, whose sum is σ = 84700226510. Its totient is φ = 84700226508.

The previous prime is 84700226491. The next prime is 84700226549. The reversal of 84700226509 is 90562200748.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74200125609 + 10500100900 = 272397^2 + 102470^2 .

It is a cyclic number.

It is not a de Polignac number, because 84700226509 - 2⁹ = 84700225997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84700226549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42350113254 + 42350113255.

It is an arithmetic number, because the mean of its divisors is an integer number (42350113255).

Almost surely, 2^84700226509 is an apocalyptic number.

It is an amenable number.

84700226509 is a deficient number, since it is larger than the sum of its proper divisors (1).

84700226509 is an equidigital number, since it uses as much as digits as its factorization.

84700226509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 43.

The spelling of 84700226509 in words is "eighty-four billion, seven hundred million, two hundred twenty-six thousand, five hundred nine".