16663755405 has 16 divisors (see below), whose sum is σ = 29085827904. Its totient is φ = 8079396480.

The previous prime is 16663755403. The next prime is 16663755431. The reversal of 16663755405 is 50455736661.

It is not a de Polignac number, because 16663755405 - 2¹ = 16663755403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16663755401) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 50496064 + ... + 50496393.

It is an arithmetic number, because the mean of its divisors is an integer number (1817864244).

Almost surely, 2^16663755405 is an apocalyptic number.

16663755405 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16663755405 is a deficient number, since it is larger than the sum of its proper divisors (12422072499).

16663755405 is a wasteful number, since it uses less digits than its factorization.

16663755405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100992476.

The product of its (nonzero) digits is 2268000, while the sum is 48.

The spelling of 16663755405 in words is "sixteen billion, six hundred sixty-three million, seven hundred fifty-five thousand, four hundred five".