20473053511680 has 1632 divisors, whose sum is σ = 89568007476480. Its totient is φ = 4202189291520.

The previous prime is 20473053511637. The next prime is 20473053511699. The reversal of 20473053511680 is 8611535037402.

It is a happy number.

20473053511680 is a `hidden beast` number, since 2 + 0 + 4 + 7 + 3 + 0 + 53 + 511 + 6 + 80 = 666.

It is a super-2 number, since 2×20473053511680² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20210318854 + ... + 20210319866.

Almost surely, 2^{20473053511680} is an apocalyptic number.

20473053511680 is a gapful number since it is divisible by the number (20) 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 20473053511680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44784003738240).

20473053511680 is an abundant number, since it is smaller than the sum of its proper divisors (69094953964800).

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

20473053511680 is a wasteful number, since it uses less digits than its factorization.

20473053511680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163 (or 1130 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The spelling of 20473053511680 in words is "twenty trillion, four hundred seventy-three billion, fifty-three million, five hundred eleven thousand, six hundred eighty".