84828943181 has 4 divisors (see below), whose sum is σ = 84879954432. Its totient is φ = 84777931932.

The previous prime is 84828943109. The next prime is 84828943187. The reversal of 84828943181 is 18134982848.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 84828943181 - 2¹⁰ = 84828942157 is a prime.

It is a super-2 number, since 2×84828943181² (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 (84828943187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25503131 + ... + 25506456.

It is an arithmetic number, because the mean of its divisors is an integer number (21219988608).

Almost surely, 2^84828943181 is an apocalyptic number.

It is an amenable number.

84828943181 is a deficient number, since it is larger than the sum of its proper divisors (51011251).

84828943181 is a wasteful number, since it uses less digits than its factorization.

84828943181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51011250.

The product of its digits is 3538944, while the sum is 56.

The spelling of 84828943181 in words is "eighty-four billion, eight hundred twenty-eight million, nine hundred forty-three thousand, one hundred eighty-one".