84818153131 has 4 divisors (see below), whose sum is σ = 84818789872. Its totient is φ = 84817516392.

The previous prime is 84818153113. The next prime is 84818153143. The reversal of 84818153131 is 13135181848.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 84818153131 - 2¹¹ = 84818151083 is a prime.

It is a super-2 number, since 2×84818153131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84818153111) 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 3 ways as a sum of consecutive naturals, for example, 33735 + ... + 413248.

It is an arithmetic number, because the mean of its divisors is an integer number (21204697468).

Almost surely, 2^84818153131 is an apocalyptic number.

84818153131 is a deficient number, since it is larger than the sum of its proper divisors (636741).

84818153131 is a wasteful number, since it uses less digits than its factorization.

84818153131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 636740.

The product of its digits is 92160, while the sum is 43.

The spelling of 84818153131 in words is "eighty-four billion, eight hundred eighteen million, one hundred fifty-three thousand, one hundred thirty-one".