21314504015 has 8 divisors (see below), whose sum is σ = 29231319840. Its totient is φ = 14615659872.

The previous prime is 21314503963. The next prime is 21314504017. The reversal of 21314504015 is 51040541312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21314504015 - 2³² = 17019536719 is a prime.

It is a super-2 number, since 2×21314504015² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21314504017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304492880 + ... + 304492949.

It is an arithmetic number, because the mean of its divisors is an integer number (3653914980).

Almost surely, 2^21314504015 is an apocalyptic number.

21314504015 is a deficient number, since it is larger than the sum of its proper divisors (7916815825).

21314504015 is an equidigital number, since it uses as much as digits as its factorization.

21314504015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 608985841.

The product of its (nonzero) digits is 2400, while the sum is 26.

The spelling of 21314504015 in words is "twenty-one billion, three hundred fourteen million, five hundred four thousand, fifteen".