21140302404 has 48 divisors (see below), whose sum is σ = 53255749568. Its totient is φ = 6488304768.

The previous prime is 21140302387. The next prime is 21140302411. The reversal of 21140302404 is 40420304112.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108742 + ... + 232605.

Almost surely, 2^21140302404 is an apocalyptic number.

It is an amenable number.

21140302404 is an abundant number, since it is smaller than the sum of its proper divisors (32115447164).

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

21140302404 is a wasteful number, since it uses less digits than its factorization.

21140302404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341764 (or 341762 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21140302404 its reverse (40420304112), we get a palindrome (61560606516).

The spelling of 21140302404 in words is "twenty-one billion, one hundred forty million, three hundred two thousand, four hundred four".