1664051236016 has 80 divisors (see below), whose sum is σ = 3598221886560. Its totient is φ = 740221440000.

The previous prime is 1664051236013. The next prime is 1664051236027. The reversal of 1664051236016 is 6106321504661.

It is not an unprimeable number, because it can be changed into a prime (1664051236013) 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 15 ways as a sum of consecutive naturals, for example, 3151016 + ... + 3641016.

It is an arithmetic number, because the mean of its divisors is an integer number (44977773582).

Almost surely, 2^{1664051236016} is an apocalyptic number.

1664051236016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1664051236016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1799110943280).

1664051236016 is an abundant number, since it is smaller than the sum of its proper divisors (1934170650544).

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

1664051236016 is a wasteful number, since it uses less digits than its factorization.

1664051236016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490614 (or 490608 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The spelling of 1664051236016 in words is "one trillion, six hundred sixty-four billion, fifty-one million, two hundred thirty-six thousand, sixteen".