16740621989 has 8 divisors (see below), whose sum is σ = 20603842560. Its totient is φ = 13245327216.

The previous prime is 16740621959. The next prime is 16740622001. The reversal of 16740621989 is 98912604761.

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

It is a cyclic number.

It is not a de Polignac number, because 16740621989 - 2¹⁶ = 16740556453 is a prime.

It is a super-2 number, since 2×16740621989² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16740621989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16740621949) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91981349 + ... + 91981530.

It is an arithmetic number, because the mean of its divisors is an integer number (2575480320).

Almost surely, 2^16740621989 is an apocalyptic number.

It is an amenable number.

16740621989 is a deficient number, since it is larger than the sum of its proper divisors (3863220571).

16740621989 is a wasteful number, since it uses less digits than its factorization.

16740621989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183962899.

The product of its (nonzero) digits is 1306368, while the sum is 53.

The spelling of 16740621989 in words is "sixteen billion, seven hundred forty million, six hundred twenty-one thousand, nine hundred eighty-nine".