21440141304 has 32 divisors (see below), whose sum is σ = 54611683920. Its totient is φ = 7011869696.

The previous prime is 21440141299. The next prime is 21440141321. The reversal of 21440141304 is 40314104412.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8426457 + ... + 8429000.

Almost surely, 2^21440141304 is an apocalyptic number.

21440141304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21440141304 is an abundant number, since it is smaller than the sum of its proper divisors (33171542616).

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

21440141304 is a wasteful number, since it uses less digits than its factorization.

21440141304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16855519 (or 16855515 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 21440141304 its reverse (40314104412), we get a palindrome (61754245716).

The spelling of 21440141304 in words is "twenty-one billion, four hundred forty million, one hundred forty-one thousand, three hundred four".