21413414344 has 24 divisors (see below), whose sum is σ = 46705279590. Its totient is φ = 9177177408.

The previous prime is 21413414287. The next prime is 21413414369. The reversal of 21413414344 is 44341431412.

It can be written as a sum of positive squares in only one way, i.e., 19384992900 + 2028421444 = 139230^2 + 45038^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27312637 + ... + 27313420.

Almost surely, 2^21413414344 is an apocalyptic number.

It is an amenable number.

21413414344 is an abundant number, since it is smaller than the sum of its proper divisors (25291865246).

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

21413414344 is a wasteful number, since it uses less digits than its factorization.

21413414344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54626077 (or 54626066 counting only the distinct ones).

The product of its digits is 18432, while the sum is 31.

Adding to 21413414344 its reverse (44341431412), we get a palindrome (65754845756).

The spelling of 21413414344 in words is "twenty-one billion, four hundred thirteen million, four hundred fourteen thousand, three hundred forty-four".