16512646315 has 16 divisors (see below), whose sum is σ = 21641665536. Its totient is φ = 11995247200.

The previous prime is 16512646309. The next prime is 16512646321. The reversal of 16512646315 is 51364621561.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (16512646309) and next prime (16512646321).

It is not a de Polignac number, because 16512646315 - 2⁷ = 16512646187 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126481 + ... + 221410.

It is an arithmetic number, because the mean of its divisors is an integer number (1352604096).

Almost surely, 2^16512646315 is an apocalyptic number.

16512646315 is a deficient number, since it is larger than the sum of its proper divisors (5129019221).

16512646315 is a wasteful number, since it uses less digits than its factorization.

16512646315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348770.

The product of its digits is 129600, while the sum is 40.

The spelling of 16512646315 in words is "sixteen billion, five hundred twelve million, six hundred forty-six thousand, three hundred fifteen".