21455001045332 has 48 divisors (see below), whose sum is σ = 38253070313472. Its totient is φ = 10526403444480.

The previous prime is 21455001045259. The next prime is 21455001045341. The reversal of 21455001045332 is 23354010055412.

It is a junction number, because it is equal to n+sod(n) for n = 21455001045292 and 21455001045301.

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, 640373693 + ... + 640407195.

It is an arithmetic number, because the mean of its divisors is an integer number (796938964864).

Almost surely, 2^{21455001045332} is an apocalyptic number.

It is an amenable number.

21455001045332 is a deficient number, since it is larger than the sum of its proper divisors (16798069268140).

21455001045332 is a wasteful number, since it uses less digits than its factorization.

21455001045332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39768 (or 39766 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 21455001045332 in words is "twenty-one trillion, four hundred fifty-five billion, one million, forty-five thousand, three hundred thirty-two".