2005501421552 has 80 divisors (see below), whose sum is σ = 4156099706880. Its totient is φ = 934194207744.

The previous prime is 2005501421537. The next prime is 2005501421591. The reversal of 2005501421552 is 2551241055002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15098693 + ... + 15230939.

It is an arithmetic number, because the mean of its divisors is an integer number (51951246336).

Almost surely, 2^{2005501421552} 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 2005501421552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2078049853440).

2005501421552 is an abundant number, since it is smaller than the sum of its proper divisors (2150598285328).

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

2005501421552 is a wasteful number, since it uses less digits than its factorization.

2005501421552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132838 (or 132832 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 32.

Adding to 2005501421552 its reverse (2551241055002), we get a palindrome (4556742476554).

The spelling of 2005501421552 in words is "two trillion, five billion, five hundred one million, four hundred twenty-one thousand, five hundred fifty-two".