84145600138 has 24 divisors (see below), whose sum is σ = 130460788836. Its totient is φ = 40703287680.

The previous prime is 84145600117. The next prime is 84145600139. The reversal of 84145600138 is 83100654148.

It can be written as a sum of positive squares in 2 ways, for example, as 79004279929 + 5141320209 = 281077^2 + 71703^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 84145600138.

It is not an unprimeable number, because it can be changed into a prime (84145600139) 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 11 ways as a sum of consecutive naturals, for example, 12022456 + ... + 12029452.

Almost surely, 2^84145600138 is an apocalyptic number.

84145600138 is a deficient number, since it is larger than the sum of its proper divisors (46315188698).

84145600138 is a wasteful number, since it uses less digits than its factorization.

84145600138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13318 (or 13287 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 40.

The spelling of 84145600138 in words is "eighty-four billion, one hundred forty-five million, six hundred thousand, one hundred thirty-eight".