20554531424532 has 144 divisors (see below), whose sum is σ = 62908696206720. Its totient is φ = 5524103079936.

The previous prime is 20554531424507. The next prime is 20554531424533. The reversal of 20554531424532 is 23542413545502.

20554531424532 is a `hidden beast` number, since 2 + 0 + 5 + 5 + 4 + 53 + 142 + 453 + 2 = 666.

It is a super-2 number, since 2×20554531424532² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20554531424533) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6110944 + ... + 8857352.

It is an arithmetic number, because the mean of its divisors is an integer number (436865945880).

Almost surely, 2^{20554531424532} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20554531424532, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31454348103360).

20554531424532 is an abundant number, since it is smaller than the sum of its proper divisors (42354164782188).

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

20554531424532 is a wasteful number, since it uses less digits than its factorization.

20554531424532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2748190 (or 2748185 counting only the distinct ones).

The product of its (nonzero) digits is 2880000, while the sum is 45.

The spelling of 20554531424532 in words is "twenty trillion, five hundred fifty-four billion, five hundred thirty-one million, four hundred twenty-four thousand, five hundred thirty-two".