84538663455 has 16 divisors (see below), whose sum is σ = 135776171520. Its totient is φ = 44915850528.

The previous prime is 84538663439. The next prime is 84538663457. The reversal of 84538663455 is 55436683548.

It is not a de Polignac number, because 84538663455 - 2⁴ = 84538663439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 84538663395 and 84538663404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84538663457) 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, 10710715 + ... + 10718604.

It is an arithmetic number, because the mean of its divisors is an integer number (8486010720).

Almost surely, 2^84538663455 is an apocalyptic number.

84538663455 is a deficient number, since it is larger than the sum of its proper divisors (51237508065).

84538663455 is a wasteful number, since it uses less digits than its factorization.

84538663455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21429590.

The product of its digits is 41472000, while the sum is 57.

The spelling of 84538663455 in words is "eighty-four billion, five hundred thirty-eight million, six hundred sixty-three thousand, four hundred fifty-five".