16263764666 has 8 divisors (see below), whose sum is σ = 25679628480. Its totient is φ = 7703888508.

The previous prime is 16263764651. The next prime is 16263764677. The reversal of 16263764666 is 66646736261.

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

It is a super-2 number, since 2×16263764666² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213996866 + ... + 213996941.

It is an arithmetic number, because the mean of its divisors is an integer number (3209953560).

Almost surely, 2^16263764666 is an apocalyptic number.

16263764666 is a deficient number, since it is larger than the sum of its proper divisors (9415863814).

16263764666 is a wasteful number, since it uses less digits than its factorization.

16263764666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427993828.

The product of its digits is 7838208, while the sum is 53.

The spelling of 16263764666 in words is "sixteen billion, two hundred sixty-three million, seven hundred sixty-four thousand, six hundred sixty-six".