84357384138 has 24 divisors (see below), whose sum is σ = 184658607588. Its totient is φ = 27829239552.

The previous prime is 84357384091. The next prime is 84357384143. The reversal of 84357384138 is 83148375348.

It is a happy number.

84357384138 is a `hidden beast` number, since 8 + 435 + 73 + 8 + 4 + 138 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 75546370449 + 8811013689 = 274857^2 + 93867^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24155581 + ... + 24159072.

Almost surely, 2^84357384138 is an apocalyptic number.

84357384138 is an abundant number, since it is smaller than the sum of its proper divisors (100301223450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

84357384138 is a wasteful number, since it uses less digits than its factorization.

84357384138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48314758 (or 48314755 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 54.

The spelling of 84357384138 in words is "eighty-four billion, three hundred fifty-seven million, three hundred eighty-four thousand, one hundred thirty-eight".