19946433705 has 16 divisors (see below), whose sum is σ = 34815593664. Its totient is φ = 9670998080.

The previous prime is 19946433667. The next prime is 19946433707. The reversal of 19946433705 is 50733464991.

It is not a de Polignac number, because 19946433705 - 2⁸ = 19946433449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19946433707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60443574 + ... + 60443903.

It is an arithmetic number, because the mean of its divisors is an integer number (2175974604).

Almost surely, 2^19946433705 is an apocalyptic number.

19946433705 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19946433705 is a deficient number, since it is larger than the sum of its proper divisors (14869159959).

19946433705 is a wasteful number, since it uses less digits than its factorization.

19946433705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120887496.

The product of its (nonzero) digits is 2449440, while the sum is 51.

The spelling of 19946433705 in words is "nineteen billion, nine hundred forty-six million, four hundred thirty-three thousand, seven hundred five".