16319676445 has 4 divisors (see below), whose sum is σ = 19583611740. Its totient is φ = 13055741152.

The previous prime is 16319676431. The next prime is 16319676497. The reversal of 16319676445 is 54467691361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54467691361 = 271 ⋅200987791.

It can be written as a sum of positive squares in 2 ways, for example, as 11660112324 + 4659564121 = 107982^2 + 68261^2 .

It is a cyclic number.

It is not a de Polignac number, because 16319676445 - 2⁵ = 16319676413 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16319676392 and 16319676401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1631967640 + ... + 1631967649.

It is an arithmetic number, because the mean of its divisors is an integer number (4895902935).

Almost surely, 2^16319676445 is an apocalyptic number.

It is an amenable number.

16319676445 is a deficient number, since it is larger than the sum of its proper divisors (3263935295).

16319676445 is an equidigital number, since it uses as much as digits as its factorization.

16319676445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3263935294.

The product of its digits is 3265920, while the sum is 52.

The spelling of 16319676445 in words is "sixteen billion, three hundred nineteen million, six hundred seventy-six thousand, four hundred forty-five".