16661073297274 has 64 divisors (see below), whose sum is σ = 29180442009600. Its totient is φ = 7131717759600.

The previous prime is 16661073297251. The next prime is 16661073297287. The reversal of 16661073297274 is 47279237016661.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2708674099 + ... + 2708680249.

It is an arithmetic number, because the mean of its divisors is an integer number (455944406400).

Almost surely, 2^{16661073297274} is an apocalyptic number.

16661073297274 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16661073297274 is a deficient number, since it is larger than the sum of its proper divisors (12519368712326).

16661073297274 is a wasteful number, since it uses less digits than its factorization.

16661073297274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10368 (or 10354 counting only the distinct ones).

The product of its (nonzero) digits is 32006016, while the sum is 61.

The spelling of 16661073297274 in words is "sixteen trillion, six hundred sixty-one billion, seventy-three million, two hundred ninety-seven thousand, two hundred seventy-four".