84854808623 has 4 divisors (see below), whose sum is σ = 91382101608. Its totient is φ = 78327515640.

The previous prime is 84854808589. The next prime is 84854808631. The reversal of 84854808623 is 32680845848.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 84854808623 - 2¹² = 84854804527 is a prime.

It is a super-2 number, since 2×84854808623² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84854808673) 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 in 3 ways as a sum of consecutive naturals, for example, 3263646473 + ... + 3263646498.

It is an arithmetic number, because the mean of its divisors is an integer number (22845525402).

Almost surely, 2^84854808623 is an apocalyptic number.

84854808623 is a deficient number, since it is larger than the sum of its proper divisors (6527292985).

84854808623 is a wasteful number, since it uses less digits than its factorization.

84854808623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6527292984.

The product of its (nonzero) digits is 11796480, while the sum is 56.

The spelling of 84854808623 in words is "eighty-four billion, eight hundred fifty-four million, eight hundred eight thousand, six hundred twenty-three".