16442677626665 has 8 divisors (see below), whose sum is σ = 19787108942088. Its totient is φ = 13116878241280.

The previous prime is 16442677626623. The next prime is 16442677626671. The reversal of 16442677626665 is 56662677624461.

It can be written as a sum of positive squares in 4 ways, for example, as 310662431641 + 16132015195024 = 557371^2 + 4016468^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16442677626665 - 2¹⁰ = 16442677625641 is a prime.

It is a super-3 number, since 3×16442677626665³ (a number of 41 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16442677626595 and 16442677626604.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4657980566 + ... + 4657984095.

It is an arithmetic number, because the mean of its divisors is an integer number (2473388617761).

Almost surely, 2^{16442677626665} is an apocalyptic number.

It is an amenable number.

16442677626665 is a deficient number, since it is larger than the sum of its proper divisors (3344431315423).

16442677626665 is an equidigital number, since it uses as much as digits as its factorization.

16442677626665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9315965019.

The product of its digits is 731566080, while the sum is 68.

The spelling of 16442677626665 in words is "sixteen trillion, four hundred forty-two billion, six hundred seventy-seven million, six hundred twenty-six thousand, six hundred sixty-five".