2168728198049 has 8 divisors (see below), whose sum is σ = 2608996328640. Its totient is φ = 1761072521616.

The previous prime is 2168728198001. The next prime is 2168728198103. The reversal of 2168728198049 is 9408918278612.

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 2168728198049 - 2¹² = 2168728193953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2168728192049) 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, 8153113394 + ... + 8153113659.

It is an arithmetic number, because the mean of its divisors is an integer number (326124541080).

Almost surely, 2^{2168728198049} is an apocalyptic number.

It is an amenable number.

2168728198049 is a deficient number, since it is larger than the sum of its proper divisors (440268130591).

2168728198049 is a wasteful number, since it uses less digits than its factorization.

2168728198049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16306227079.

The product of its (nonzero) digits is 27869184, while the sum is 65.

The spelling of 2168728198049 in words is "two trillion, one hundred sixty-eight billion, seven hundred twenty-eight million, one hundred ninety-eight thousand, forty-nine".