84634568143 has 4 divisors (see below), whose sum is σ = 85004151640. Its totient is φ = 84264984648.

The previous prime is 84634568071. The next prime is 84634568149. The reversal of 84634568143 is 34186543648.

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 84634568143 - 2¹⁷ = 84634437071 is a prime.

It is a super-2 number, since 2×84634568143² (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 (84634568149) 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, 184791405 + ... + 184791862.

It is an arithmetic number, because the mean of its divisors is an integer number (21251037910).

Almost surely, 2^84634568143 is an apocalyptic number.

84634568143 is a deficient number, since it is larger than the sum of its proper divisors (369583497).

84634568143 is a wasteful number, since it uses less digits than its factorization.

84634568143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369583496.

The product of its digits is 6635520, while the sum is 52.

The spelling of 84634568143 in words is "eighty-four billion, six hundred thirty-four million, five hundred sixty-eight thousand, one hundred forty-three".