20555503451352 has 96 divisors (see below), whose sum is σ = 56231106197760. Its totient is φ = 6782938560000.

The previous prime is 20555503451341. The next prime is 20555503451369. The reversal of 20555503451352 is 25315430555502.

It is a happy number.

20555503451352 is a `hidden beast` number, since 2 + 0 + 5 + 5 + 5 + 50 + 34 + 513 + 52 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 20555503451298 and 20555503451307.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47203977 + ... + 47637447.

It is an arithmetic number, because the mean of its divisors is an integer number (585740689560).

Almost surely, 2^{20555503451352} 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 20555503451352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28115553098880).

20555503451352 is an abundant number, since it is smaller than the sum of its proper divisors (35675602746408).

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

20555503451352 is a wasteful number, since it uses less digits than its factorization.

20555503451352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440105 (or 440098 counting only the distinct ones).

The product of its (nonzero) digits is 2250000, while the sum is 45.

The spelling of 20555503451352 in words is "twenty trillion, five hundred fifty-five billion, five hundred three million, four hundred fifty-one thousand, three hundred fifty-two".