16690974074 has 4 divisors (see below), whose sum is σ = 25036461114. Its totient is φ = 8345487036.

The previous prime is 16690974073. The next prime is 16690974077. The reversal of 16690974074 is 47047909661.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47047909661 = 563 ⋅83566447.

It can be written as a sum of positive squares in only one way, i.e., 9507225025 + 7183749049 = 97505^2 + 84757^2 .

It is not an unprimeable number, because it can be changed into a prime (16690974071) 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 as a sum of consecutive naturals, namely, 4172743517 + ... + 4172743520.

Almost surely, 2^16690974074 is an apocalyptic number.

16690974074 is a deficient number, since it is larger than the sum of its proper divisors (8345487040).

16690974074 is an equidigital number, since it uses as much as digits as its factorization.

16690974074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8345487039.

The product of its (nonzero) digits is 2286144, while the sum is 53.

The spelling of 16690974074 in words is "sixteen billion, six hundred ninety million, nine hundred seventy-four thousand, seventy-four".