16651463315 has 4 divisors (see below), whose sum is σ = 19981755984. Its totient is φ = 13321170648.

The previous prime is 16651463267. The next prime is 16651463321. The reversal of 16651463315 is 51336415661.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16651463315 - 2⁶ = 16651463251 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1665146327 + ... + 1665146336.

It is an arithmetic number, because the mean of its divisors is an integer number (4995438996).

Almost surely, 2^16651463315 is an apocalyptic number.

16651463315 is a deficient number, since it is larger than the sum of its proper divisors (3330292669).

16651463315 is an equidigital number, since it uses as much as digits as its factorization.

16651463315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3330292668.

The product of its digits is 194400, while the sum is 41.

Adding to 16651463315 its reverse (51336415661), we get a palindrome (67987878976).

The spelling of 16651463315 in words is "sixteen billion, six hundred fifty-one million, four hundred sixty-three thousand, three hundred fifteen".