16442663777650 has 24 divisors (see below), whose sum is σ = 33363659593584. Its totient is φ = 5979150464400.

The previous prime is 16442663777591. The next prime is 16442663777693. The reversal of 16442663777650 is 5677736624461.

It is a happy number.

It is a super-3 number, since 3×16442663777650³ (a number of 41 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (64) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 14947875612 + ... + 14947876711.

It is an arithmetic number, because the mean of its divisors is an integer number (1390152483066).

Almost surely, 2^{16442663777650} is an apocalyptic number.

16442663777650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16442663777650 is an abundant number, since it is smaller than the sum of its proper divisors (16920995815934).

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

16442663777650 is a wasteful number, since it uses less digits than its factorization.

16442663777650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29895752346 (or 29895752341 counting only the distinct ones).

The product of its (nonzero) digits is 213373440, while the sum is 64.

The spelling of 16442663777650 in words is "sixteen trillion, four hundred forty-two billion, six hundred sixty-three million, seven hundred seventy-seven thousand, six hundred fifty".