16761320807650 has 24 divisors (see below), whose sum is σ = 32816901793680. Its totient is φ = 6351658410960.

The previous prime is 16761320807641. The next prime is 16761320807677. The reversal of 16761320807650 is 5670802316761.

It is a happy number.

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, 8821746844 + ... + 8821748743.

It is an arithmetic number, because the mean of its divisors is an integer number (1367370908070).

Almost surely, 2^{16761320807650} is an apocalyptic number.

16761320807650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16761320807650 is a deficient number, since it is larger than the sum of its proper divisors (16055580986030).

16761320807650 is a wasteful number, since it uses less digits than its factorization.

16761320807650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17643495618 (or 17643495613 counting only the distinct ones).

The product of its (nonzero) digits is 2540160, while the sum is 52.

The spelling of 16761320807650 in words is "sixteen trillion, seven hundred sixty-one billion, three hundred twenty million, eight hundred seven thousand, six hundred fifty".