21434002404 has 48 divisors (see below), whose sum is σ = 52385743872. Its totient is φ = 6808021792.

The previous prime is 21434002393. The next prime is 21434002411. The reversal of 21434002404 is 40420043412.

It is a happy number.

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, 75054 + ... + 220229.

It is an arithmetic number, because the mean of its divisors is an integer number (1091369664).

Almost surely, 2^21434002404 is an apocalyptic number.

It is an amenable number.

21434002404 is an abundant number, since it is smaller than the sum of its proper divisors (30951741468).

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

21434002404 is a wasteful number, since it uses less digits than its factorization.

21434002404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 295576 (or 295574 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 21434002404 its reverse (40420043412), we get a palindrome (61854045816).

The spelling of 21434002404 in words is "twenty-one billion, four hundred thirty-four million, two thousand, four hundred four".