21514333404 has 24 divisors (see below), whose sum is σ = 50202649728. Its totient is φ = 7171081840.

The previous prime is 21514333397. The next prime is 21514333409. The reversal of 21514333404 is 40433341512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21514333409) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 319009 + ... + 380519.

It is an arithmetic number, because the mean of its divisors is an integer number (2091777072).

Almost surely, 2^21514333404 is an apocalyptic number.

It is an amenable number.

21514333404 is an abundant number, since it is smaller than the sum of its proper divisors (28688316324).

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

21514333404 is a wasteful number, since it uses less digits than its factorization.

21514333404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90665 (or 90663 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

Adding to 21514333404 its reverse (40433341512), we get a palindrome (61947674916).

The spelling of 21514333404 in words is "twenty-one billion, five hundred fourteen million, three hundred thirty-three thousand, four hundred four".