84806538663 has 72 divisors (see below), whose sum is σ = 146260912896. Its totient is φ = 43221796800.

The previous prime is 84806538563. The next prime is 84806538731. The reversal of 84806538663 is 36683560848.

It is not a de Polignac number, because 84806538663 - 2¹⁴ = 84806522279 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84806538263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 4532818 + ... + 4551488.

It is an arithmetic number, because the mean of its divisors is an integer number (2031401568).

Almost surely, 2^84806538663 is an apocalyptic number.

84806538663 is a deficient number, since it is larger than the sum of its proper divisors (61454374233).

84806538663 is a wasteful number, since it uses less digits than its factorization.

84806538663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18805 (or 18745 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 57.

The spelling of 84806538663 in words is "eighty-four billion, eight hundred six million, five hundred thirty-eight thousand, six hundred sixty-three".