21630304583315 has 8 divisors (see below), whose sum is σ = 26007968615328. Its totient is φ = 17269841589760.

The previous prime is 21630304583299. The next prime is 21630304583317. The reversal of 21630304583315 is 51338540303612.

It is a happy number.

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

It is not a de Polignac number, because 21630304583315 - 2⁴ = 21630304583299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21630304583317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4300256846 + ... + 4300261875.

It is an arithmetic number, because the mean of its divisors is an integer number (3250996076916).

Almost surely, 2^{21630304583315} is an apocalyptic number.

21630304583315 is a deficient number, since it is larger than the sum of its proper divisors (4377664032013).

21630304583315 is an equidigital number, since it uses as much as digits as its factorization.

21630304583315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8600519229.

The product of its (nonzero) digits is 777600, while the sum is 44.

Adding to 21630304583315 its reverse (51338540303612), we get a palindrome (72968844886927).

The spelling of 21630304583315 in words is "twenty-one trillion, six hundred thirty billion, three hundred four million, five hundred eighty-three thousand, three hundred fifteen".