16359139666 has 8 divisors (see below), whose sum is σ = 25605609984. Its totient is φ = 7823936340.

The previous prime is 16359139663. The next prime is 16359139679. The reversal of 16359139666 is 66693195361.

16359139666 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×16359139666² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16359139663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 177816690 + ... + 177816781.

It is an arithmetic number, because the mean of its divisors is an integer number (3200701248).

Almost surely, 2^16359139666 is an apocalyptic number.

16359139666 is a deficient number, since it is larger than the sum of its proper divisors (9246470318).

16359139666 is a wasteful number, since it uses less digits than its factorization.

16359139666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355633496.

The product of its digits is 4723920, while the sum is 55.

It can be divided in two parts, 16359 and 139666, that added together give a square (156025 = 395²).

The spelling of 16359139666 in words is "sixteen billion, three hundred fifty-nine million, one hundred thirty-nine thousand, six hundred sixty-six".