21304325415 has 64 divisors (see below), whose sum is σ = 36580170240. Its totient is φ = 10556582400.

The previous prime is 21304325401. The next prime is 21304325431. The reversal of 21304325415 is 51452340312.

It is not a de Polignac number, because 21304325415 - 2⁶ = 21304325351 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3076537 + ... + 3083453.

It is an arithmetic number, because the mean of its divisors is an integer number (571565160).

Almost surely, 2^21304325415 is an apocalyptic number.

21304325415 is a deficient number, since it is larger than the sum of its proper divisors (15275844825).

21304325415 is a wasteful number, since it uses less digits than its factorization.

21304325415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7152.

The product of its (nonzero) digits is 14400, while the sum is 30.

Adding to 21304325415 its reverse (51452340312), we get a palindrome (72756665727).

The spelling of 21304325415 in words is "twenty-one billion, three hundred four million, three hundred twenty-five thousand, four hundred fifteen".