16798641847 has 4 divisors (see below), whose sum is σ = 18090845080. Its totient is φ = 15506438616.

The previous prime is 16798641833. The next prime is 16798641857. The reversal of 16798641847 is 74814689761.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16798641847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16798641857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 646101597 + ... + 646101622.

It is an arithmetic number, because the mean of its divisors is an integer number (4522711270).

Almost surely, 2^16798641847 is an apocalyptic number.

16798641847 is a deficient number, since it is larger than the sum of its proper divisors (1292203233).

16798641847 is a wasteful number, since it uses less digits than its factorization.

16798641847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292203232.

The product of its digits is 16257024, while the sum is 61.

The spelling of 16798641847 in words is "sixteen billion, seven hundred ninety-eight million, six hundred forty-one thousand, eight hundred forty-seven".