16616764774 has 8 divisors (see below), whose sum is σ = 24953441688. Its totient is φ = 8298950880.

The previous prime is 16616764763. The next prime is 16616764783. The reversal of 16616764774 is 47746761661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×16616764774² (a number of 21 digits) contains 22 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 (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4713552 + ... + 4717075.

It is an arithmetic number, because the mean of its divisors is an integer number (3119180211).

Almost surely, 2^16616764774 is an apocalyptic number.

16616764774 is a deficient number, since it is larger than the sum of its proper divisors (8336676914).

16616764774 is an equidigital number, since it uses as much as digits as its factorization.

16616764774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9431510.

The product of its digits is 7112448, while the sum is 55.

The spelling of 16616764774 in words is "sixteen billion, six hundred sixteen million, seven hundred sixty-four thousand, seven hundred seventy-four".