16740621988 has 6 divisors (see below), whose sum is σ = 29296088486. Its totient is φ = 8370310992.

The previous prime is 16740621959. The next prime is 16740622001. The reversal of 16740621988 is 88912604761.

It can be written as a sum of positive squares in only one way, i.e., 8756842084 + 7983779904 = 93578^2 + 89352^2 .

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 as a sum of consecutive naturals, namely, 2092577745 + ... + 2092577752.

Almost surely, 2^16740621988 is an apocalyptic number.

It is an amenable number.

16740621988 is a deficient number, since it is larger than the sum of its proper divisors (12555466498).

16740621988 is a wasteful number, since it uses less digits than its factorization.

16740621988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4185155501 (or 4185155499 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 52.

The spelling of 16740621988 in words is "sixteen billion, seven hundred forty million, six hundred twenty-one thousand, nine hundred eighty-eight".