16647343763457 has 24 divisors (see below), whose sum is σ = 24477231700768. Its totient is φ = 10056435016320.

The previous prime is 16647343763443. The next prime is 16647343763503. The reversal of 16647343763457 is 75436734374661.

It is a happy number.

It is not a de Polignac number, because 16647343763457 - 2⁸ = 16647343763201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16647343763437) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74579848 + ... + 74802729.

Almost surely, 2^{16647343763457} is an apocalyptic number.

It is an amenable number.

16647343763457 is a deficient number, since it is larger than the sum of its proper divisors (7829887937311).

16647343763457 is a wasteful number, since it uses less digits than its factorization.

16647343763457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149382909 (or 149382898 counting only the distinct ones).

The product of its digits is 640120320, while the sum is 66.

The spelling of 16647343763457 in words is "sixteen trillion, six hundred forty-seven billion, three hundred forty-three million, seven hundred sixty-three thousand, four hundred fifty-seven".