21446330465153 has 4 divisors (see below), whose sum is σ = 23395996871088. Its totient is φ = 19496664059220.

The previous prime is 21446330465123. The next prime is 21446330465177. The reversal of 21446330465153 is 35156403364412.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21446330465153 - 2²⁶ = 21446263356289 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 21446330465098 and 21446330465107.

It is not an unprimeable number, because it can be changed into a prime (21446330465123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 974833202951 + ... + 974833202972.

It is an arithmetic number, because the mean of its divisors is an integer number (5848999217772).

Almost surely, 2^{21446330465153} is an apocalyptic number.

It is an amenable number.

21446330465153 is a deficient number, since it is larger than the sum of its proper divisors (1949666405935).

21446330465153 is a wasteful number, since it uses less digits than its factorization.

21446330465153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1949666405934.

The product of its (nonzero) digits is 3110400, while the sum is 47.

The spelling of 21446330465153 in words is "twenty-one trillion, four hundred forty-six billion, three hundred thirty million, four hundred sixty-five thousand, one hundred fifty-three".