16649398953105 has 32 divisors (see below), whose sum is σ = 27091914480000. Its totient is φ = 8728735913472.

The previous prime is 16649398953059. The next prime is 16649398953139. The reversal of 16649398953105 is 50135989394661.

It is not a de Polignac number, because 16649398953105 - 2⁶ = 16649398953041 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16649398953105.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17455827 + ... + 18384903.

It is an arithmetic number, because the mean of its divisors is an integer number (846622327500).

Almost surely, 2^{16649398953105} is an apocalyptic number.

16649398953105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16649398953105 is a deficient number, since it is larger than the sum of its proper divisors (10442515526895).

16649398953105 is a wasteful number, since it uses less digits than its factorization.

16649398953105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 949393.

The product of its (nonzero) digits is 188956800, while the sum is 69.

The spelling of 16649398953105 in words is "sixteen trillion, six hundred forty-nine billion, three hundred ninety-eight million, nine hundred fifty-three thousand, one hundred five".