21454554341202 has 128 divisors (see below), whose sum is σ = 47543735137536. Its totient is φ = 6426856783872.

The previous prime is 21454554341189. The next prime is 21454554341203. The reversal of 21454554341202 is 20214345545412.

It is not an unprimeable number, because it can be changed into a prime (21454554341203) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35883618 + ... + 36476610.

It is an arithmetic number, because the mean of its divisors is an integer number (371435430762).

Almost surely, 2^{21454554341202} is an apocalyptic number.

21454554341202 is an abundant number, since it is smaller than the sum of its proper divisors (26089180796334).

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

21454554341202 is a wasteful number, since it uses less digits than its factorization.

21454554341202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 593244.

The product of its (nonzero) digits is 768000, while the sum is 42.

Adding to 21454554341202 its reverse (20214345545412), we get a palindrome (41668899886614).

The spelling of 21454554341202 in words is "twenty-one trillion, four hundred fifty-four billion, five hundred fifty-four million, three hundred forty-one thousand, two hundred two".