16961786805 has 16 divisors (see below), whose sum is σ = 28735262784. Its totient is φ = 8514151680.

The previous prime is 16961786773. The next prime is 16961786833. The reversal of 16961786805 is 50868716961.

16961786805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16961786805 - 2⁵ = 16961786773 is a prime.

It is a super-4 number, since 4×16961786805⁴ (a number of 42 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

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, 33258151 + ... + 33258660.

It is an arithmetic number, because the mean of its divisors is an integer number (1795953924).

Almost surely, 2^16961786805 is an apocalyptic number.

16961786805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16961786805 is a deficient number, since it is larger than the sum of its proper divisors (11773475979).

16961786805 is a wasteful number, since it uses less digits than its factorization.

16961786805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66516836.

The product of its (nonzero) digits is 4354560, while the sum is 57.

The spelling of 16961786805 in words is "sixteen billion, nine hundred sixty-one million, seven hundred eighty-six thousand, eight hundred five".