16750681642 has 4 divisors (see below), whose sum is σ = 25126022466. Its totient is φ = 8375340820.

The previous prime is 16750681601. The next prime is 16750681643. The reversal of 16750681642 is 24618605761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 24618605761 = 61 ⋅403583701.

It can be written as a sum of positive squares in only one way, i.e., 16545934161 + 204747481 = 128631^2 + 14309^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16750681592 and 16750681601.

It is not an unprimeable number, because it can be changed into a prime (16750681643) 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, 4187670409 + ... + 4187670412.

Almost surely, 2^16750681642 is an apocalyptic number.

16750681642 is a deficient number, since it is larger than the sum of its proper divisors (8375340824).

16750681642 is an equidigital number, since it uses as much as digits as its factorization.

16750681642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8375340823.

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 16750681642 in words is "sixteen billion, seven hundred fifty million, six hundred eighty-one thousand, six hundred forty-two".