16116661506 has 32 divisors (see below), whose sum is σ = 35511794496. Its totient is φ = 4835480000.

The previous prime is 16116661471. The next prime is 16116661537. The reversal of 16116661506 is 60516661161.

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, 1202205 + ... + 1215536.

It is an arithmetic number, because the mean of its divisors is an integer number (1109743578).

Almost surely, 2^16116661506 is an apocalyptic number.

16116661506 is an abundant number, since it is smaller than the sum of its proper divisors (19395132990).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16116661506 is a wasteful number, since it uses less digits than its factorization.

16116661506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2417858.

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 16116661506 in words is "sixteen billion, one hundred sixteen million, six hundred sixty-one thousand, five hundred six".