16754661643 has 8 divisors (see below), whose sum is σ = 17684549120. Its totient is φ = 15829580520.

The previous prime is 16754661631. The next prime is 16754661653. The reversal of 16754661643 is 34616645761.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16754661643 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16754661613) 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, 1194423 + ... + 1208368.

It is an arithmetic number, because the mean of its divisors is an integer number (2210568640).

Almost surely, 2^16754661643 is an apocalyptic number.

16754661643 is a deficient number, since it is larger than the sum of its proper divisors (929887477).

16754661643 is a wasteful number, since it uses less digits than its factorization.

16754661643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2403177.

The product of its digits is 2177280, while the sum is 49.

The spelling of 16754661643 in words is "sixteen billion, seven hundred fifty-four million, six hundred sixty-one thousand, six hundred forty-three".