16793909505 has 48 divisors (see below), whose sum is σ = 29834266176. Its totient is φ = 8734400640.

The previous prime is 16793909491. The next prime is 16793909513. The reversal of 16793909505 is 50590939761.

16793909505 is a `hidden beast` number, since 167 + 9 + 390 + 95 + 0 + 5 = 666.

It is not a de Polignac number, because 16793909505 - 2²³ = 16785520897 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1256910 + ... + 1270200.

It is an arithmetic number, because the mean of its divisors is an integer number (621547212).

Almost surely, 2^16793909505 is an apocalyptic number.

16793909505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16793909505 is a deficient number, since it is larger than the sum of its proper divisors (13040356671).

16793909505 is a wasteful number, since it uses less digits than its factorization.

16793909505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13998 (or 13995 counting only the distinct ones).

The product of its (nonzero) digits is 2296350, while the sum is 54.

The spelling of 16793909505 in words is "sixteen billion, seven hundred ninety-three million, nine hundred nine thousand, five hundred five".