20644460053052 has 192 divisors, whose sum is σ = 44753140776960. Its totient is φ = 8224301433600.

The previous prime is 20644460053043. The next prime is 20644460053069. The reversal of 20644460053052 is 25035006444602.

It is a super-3 number, since 3×20644460053052³ (a number of 41 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 52179158 + ... + 52573314.

It is an arithmetic number, because the mean of its divisors is an integer number (233089274880).

Almost surely, 2^{20644460053052} is an apocalyptic number.

20644460053052 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

20644460053052 is an abundant number, since it is smaller than the sum of its proper divisors (24108680723908).

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

20644460053052 is a wasteful number, since it uses less digits than its factorization.

20644460053052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394312 (or 394310 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 41.

Adding to 20644460053052 its reverse (25035006444602), we get a palindrome (45679466497654).

The spelling of 20644460053052 in words is "twenty trillion, six hundred forty-four billion, four hundred sixty million, fifty-three thousand, fifty-two".