16668500926850 has 24 divisors (see below), whose sum is σ = 31841341774068. Its totient is φ = 6487200360000.

The previous prime is 16668500926837. The next prime is 16668500926991. The reversal of 16668500926850 is 5862900586661.

It can be written as a sum of positive squares in 6 ways, for example, as 12723824300209 + 3944676626641 = 3567047^2 + 1986121^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4504998401 + ... + 4505002100.

Almost surely, 2^{16668500926850} is an apocalyptic number.

16668500926850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16668500926850 is a deficient number, since it is larger than the sum of its proper divisors (15172840847218).

16668500926850 is a wasteful number, since it uses less digits than its factorization.

16668500926850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9010000550 (or 9010000545 counting only the distinct ones).

The product of its (nonzero) digits is 37324800, while the sum is 62.

The spelling of 16668500926850 in words is "sixteen trillion, six hundred sixty-eight billion, five hundred million, nine hundred twenty-six thousand, eight hundred fifty".