21455450052235 has 24 divisors (see below), whose sum is σ = 26916502702320. Its totient is φ = 16416938146752.

The previous prime is 21455450052199. The next prime is 21455450052269. The reversal of 21455450052235 is 53225005455412.

It is not a de Polignac number, because 21455450052235 - 2³¹ = 21453302568587 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21455450052191 and 21455450052200.

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, 38650876 + ... + 39202054.

It is an arithmetic number, because the mean of its divisors is an integer number (1121520945930).

Almost surely, 2^{21455450052235} is an apocalyptic number.

21455450052235 is a deficient number, since it is larger than the sum of its proper divisors (5461052650085).

21455450052235 is a wasteful number, since it uses less digits than its factorization.

21455450052235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 565947 (or 565924 counting only the distinct ones).

The product of its (nonzero) digits is 1200000, while the sum is 43.

The spelling of 21455450052235 in words is "twenty-one trillion, four hundred fifty-five billion, four hundred fifty million, fifty-two thousand, two hundred thirty-five".