16575701138 has 4 divisors (see below), whose sum is σ = 24863551710. Its totient is φ = 8287850568.

The previous prime is 16575701123. The next prime is 16575701143. The reversal of 16575701138 is 83110757561.

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

It can be written as a sum of positive squares in only one way, i.e., 15978729649 + 596971489 = 126407^2 + 24433^2 .

It is an unprimeable number.

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, 4143925283 + ... + 4143925286.

Almost surely, 2^16575701138 is an apocalyptic number.

16575701138 is a deficient number, since it is larger than the sum of its proper divisors (8287850572).

16575701138 is an equidigital number, since it uses as much as digits as its factorization.

16575701138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8287850571.

The product of its (nonzero) digits is 176400, while the sum is 44.

The spelling of 16575701138 in words is "sixteen billion, five hundred seventy-five million, seven hundred one thousand, one hundred thirty-eight".