84521852854 has 4 divisors (see below), whose sum is σ = 126782779284. Its totient is φ = 42260926426.

The previous prime is 84521852851. The next prime is 84521852867. The reversal of 84521852854 is 45825812548.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84521852851) 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 as a sum of consecutive naturals, namely, 21130463212 + ... + 21130463215.

It is an arithmetic number, because the mean of its divisors is an integer number (31695694821).

Almost surely, 2^84521852854 is an apocalyptic number.

84521852854 is a deficient number, since it is larger than the sum of its proper divisors (42260926430).

84521852854 is a wasteful number, since it uses less digits than its factorization.

84521852854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42260926429.

The product of its digits is 4096000, while the sum is 52.

The spelling of 84521852854 in words is "eighty-four billion, five hundred twenty-one million, eight hundred fifty-two thousand, eight hundred fifty-four".