21255241306632 has 32 divisors (see below), whose sum is σ = 53139475027680. Its totient is φ = 7084897534080.

The previous prime is 21255241306619. The next prime is 21255241306633. The reversal of 21255241306632 is 23660314255212.

It is not an unprimeable number, because it can be changed into a prime (21255241306633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10480669 + ... + 12343212.

It is an arithmetic number, because the mean of its divisors is an integer number (1660608594615).

Almost surely, 2^{21255241306632} is an apocalyptic number.

It is an amenable number.

21255241306632 is an abundant number, since it is smaller than the sum of its proper divisors (31884233721048).

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

21255241306632 is a wasteful number, since it uses less digits than its factorization.

21255241306632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22862693 (or 22862689 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 21255241306632 in words is "twenty-one trillion, two hundred fifty-five billion, two hundred forty-one million, three hundred six thousand, six hundred thirty-two".