20540544000 has 352 divisors, whose sum is σ = 68975712000. Its totient is φ = 5425561600.

The previous prime is 20540543999. The next prime is 20540544041. The reversal of 20540544000 is 44504502.

It is a Harshad number since it is a multiple of its sum of digits (24).

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 31 ways as a sum of consecutive naturals, for example, 57215821 + ... + 57216179.

Almost surely, 2^20540544000 is an apocalyptic number.

20540544000 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 20540544000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34487856000).

20540544000 is an abundant number, since it is smaller than the sum of its proper divisors (48435168000).

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

20540544000 is a wasteful number, since it uses less digits than its factorization.

20540544000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546 (or 518 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 24.

The spelling of 20540544000 in words is "twenty billion, five hundred forty million, five hundred forty-four thousand".