21003410004 has 24 divisors (see below), whose sum is σ = 49117118400. Its totient is φ = 6985542144.

The previous prime is 21003409969. The next prime is 21003410033. The reversal of 21003410004 is 40001430012.

It is a super-2 number, since 2×21003410004² (a number of 21 digits) contains 22 as substring.

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, 1943704 + ... + 1954479.

It is an arithmetic number, because the mean of its divisors is an integer number (2046546600).

Almost surely, 2^21003410004 is an apocalyptic number.

It is an amenable number.

21003410004 is an abundant number, since it is smaller than the sum of its proper divisors (28113708396).

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

21003410004 is a wasteful number, since it uses less digits than its factorization.

21003410004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3898639 (or 3898637 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 21003410004 its reverse (40001430012), we get a palindrome (61004840016).

The spelling of 21003410004 in words is "twenty-one billion, three million, four hundred ten thousand, four".