16761329978 has 16 divisors (see below), whose sum is σ = 26470566720. Its totient is φ = 7937984736.

The previous prime is 16761329951. The next prime is 16761329989. The reversal of 16761329978 is 87992316761.

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 7 ways as a sum of consecutive naturals, for example, 159926 + ... + 243102.

It is an arithmetic number, because the mean of its divisors is an integer number (1654410420).

Almost surely, 2^16761329978 is an apocalyptic number.

16761329978 is a deficient number, since it is larger than the sum of its proper divisors (9709236742).

16761329978 is a wasteful number, since it uses less digits than its factorization.

16761329978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88501.

The product of its digits is 6858432, while the sum is 59.

The spelling of 16761329978 in words is "sixteen billion, seven hundred sixty-one million, three hundred twenty-nine thousand, nine hundred seventy-eight".