1639232744988 has 24 divisors (see below), whose sum is σ = 3828629992320. Its totient is φ = 545874688240.

The previous prime is 1639232744977. The next prime is 1639232745037. The reversal of 1639232744988 is 8894472329361.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 67015608 + ... + 67040063.

It is an arithmetic number, because the mean of its divisors is an integer number (159526249680).

Almost surely, 2^{1639232744988} is an apocalyptic number.

It is an amenable number.

1639232744988 is an abundant number, since it is smaller than the sum of its proper divisors (2189397247332).

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

1639232744988 is a wasteful number, since it uses less digits than its factorization.

1639232744988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134056697 (or 134056695 counting only the distinct ones).

The product of its digits is 125411328, while the sum is 66.

The spelling of 1639232744988 in words is "one trillion, six hundred thirty-nine billion, two hundred thirty-two million, seven hundred forty-four thousand, nine hundred eighty-eight".