16585641442 has 4 divisors (see below), whose sum is σ = 24878462166. Its totient is φ = 8292820720.

The previous prime is 16585641437. The next prime is 16585641451. The reversal of 16585641442 is 24414658561.

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., 16261605441 + 324036001 = 127521^2 + 18001^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16585641392 and 16585641401.

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, 4146410359 + ... + 4146410362.

Almost surely, 2^16585641442 is an apocalyptic number.

16585641442 is a deficient number, since it is larger than the sum of its proper divisors (8292820724).

16585641442 is an equidigital number, since it uses as much as digits as its factorization.

16585641442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8292820723.

The product of its digits is 921600, while the sum is 46.

The spelling of 16585641442 in words is "sixteen billion, five hundred eighty-five million, six hundred forty-one thousand, four hundred forty-two".