16115061515 has 16 divisors (see below), whose sum is σ = 23400695232. Its totient is φ = 10400308224.

The previous prime is 16115061497. The next prime is 16115061541. The reversal of 16115061515 is 51516051161.

It is a cyclic number.

It is not a de Polignac number, because 16115061515 - 2²² = 16110867211 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13541474 + ... + 13542663.

It is an arithmetic number, because the mean of its divisors is an integer number (1462543452).

Almost surely, 2^16115061515 is an apocalyptic number.

16115061515 is a deficient number, since it is larger than the sum of its proper divisors (7285633717).

16115061515 is a wasteful number, since it uses less digits than its factorization.

16115061515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27084166.

The product of its (nonzero) digits is 4500, while the sum is 32.

The spelling of 16115061515 in words is "sixteen billion, one hundred fifteen million, sixty-one thousand, five hundred fifteen".