84128437166 has 16 divisors (see below), whose sum is σ = 133644310560. Its totient is φ = 39581391360.

The previous prime is 84128437163. The next prime is 84128437181. The reversal of 84128437166 is 66173482148.

It is a super-2 number, since 2×84128437166² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84128437163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101546 + ... + 422573.

It is an arithmetic number, because the mean of its divisors is an integer number (8352769410).

Almost surely, 2^84128437166 is an apocalyptic number.

84128437166 is a deficient number, since it is larger than the sum of its proper divisors (49515873394).

84128437166 is a wasteful number, since it uses less digits than its factorization.

84128437166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 528859.

The product of its digits is 1548288, while the sum is 50.

The spelling of 84128437166 in words is "eighty-four billion, one hundred twenty-eight million, four hundred thirty-seven thousand, one hundred sixty-six".