84638820010788 has 54 divisors (see below), whose sum is σ = 221580047406354. Its totient is φ = 27240079993728.

The previous prime is 84638820010763. The next prime is 84638820010799. The reversal of 84638820010788 is 88701002883648.

84638820010788 is a `hidden beast` number, since 8 + 46 + 388 + 200 + 1 + 0 + 7 + 8 + 8 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 10881606417984 + 73757213592804 = 3298728^2 + 8588202^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1397757081 + ... + 1397817632.

Almost surely, 2^{84638820010788} is an apocalyptic number.

It is an amenable number.

84638820010788 is an abundant number, since it is smaller than the sum of its proper divisors (136941227395566).

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

84638820010788 is a wasteful number, since it uses less digits than its factorization.

84638820010788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2795574781 (or 2795574747 counting only the distinct ones).

The product of its (nonzero) digits is 33030144, while the sum is 63.

The spelling of 84638820010788 in words is "eighty-four trillion, six hundred thirty-eight billion, eight hundred twenty million, ten thousand, seven hundred eighty-eight".