16374980785 has 4 divisors (see below), whose sum is σ = 19649976948. Its totient is φ = 13099984624.

The previous prime is 16374980749. The next prime is 16374980789. The reversal of 16374980785 is 58708947361.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 10281148816 + 6093831969 = 101396^2 + 78063^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16374980785 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16374980789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1637498074 + ... + 1637498083.

It is an arithmetic number, because the mean of its divisors is an integer number (4912494237).

Almost surely, 2^16374980785 is an apocalyptic number.

It is an amenable number.

16374980785 is a deficient number, since it is larger than the sum of its proper divisors (3274996163).

16374980785 is an equidigital number, since it uses as much as digits as its factorization.

16374980785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3274996162.

The product of its (nonzero) digits is 10160640, while the sum is 58.

The spelling of 16374980785 in words is "sixteen billion, three hundred seventy-four million, nine hundred eighty thousand, seven hundred eighty-five".