84367636221 has 16 divisors (see below), whose sum is σ = 122842214208. Its totient is φ = 51079545600.

The previous prime is 84367636207. The next prime is 84367636237. The reversal of 84367636221 is 12263676348.

It is not a de Polignac number, because 84367636221 - 2⁵ = 84367636189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84367636121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1276150 + ... + 1340631.

It is an arithmetic number, because the mean of its divisors is an integer number (7677638388).

Almost surely, 2^84367636221 is an apocalyptic number.

It is an amenable number.

84367636221 is a deficient number, since it is larger than the sum of its proper divisors (38474577987).

84367636221 is a wasteful number, since it uses less digits than its factorization.

84367636221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2617772.

The product of its digits is 1741824, while the sum is 48.

The spelling of 84367636221 in words is "eighty-four billion, three hundred sixty-seven million, six hundred thirty-six thousand, two hundred twenty-one".