84343406571 has 8 divisors (see below), whose sum is σ = 124953194960. Its totient is φ = 56228937696.

The previous prime is 84343406561. The next prime is 84343406579. The reversal of 84343406571 is 17560434348.

84343406571 is a `hidden beast` number, since 8 + 4 + 34 + 3 + 40 + 6 + 571 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-84343406571 is a prime.

It is a super-2 number, since 2×84343406571² (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 (84343406579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1561914910 + ... + 1561914963.

It is an arithmetic number, because the mean of its divisors is an integer number (15619149370).

Almost surely, 2^84343406571 is an apocalyptic number.

84343406571 is a deficient number, since it is larger than the sum of its proper divisors (40609788389).

84343406571 is a wasteful number, since it uses less digits than its factorization.

84343406571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3123829882 (or 3123829876 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 45.

The spelling of 84343406571 in words is "eighty-four billion, three hundred forty-three million, four hundred six thousand, five hundred seventy-one".