16219641242746 has 4 divisors (see below), whose sum is σ = 24329461864122. Its totient is φ = 8109820621372.

The previous prime is 16219641242731. The next prime is 16219641242789. The reversal of 16219641242746 is 64724214691261.

It is a happy number.

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., 15704061237225 + 515580005521 = 3962835^2 + 718039^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4054910310685 + ... + 4054910310688.

Almost surely, 2^{16219641242746} is an apocalyptic number.

16219641242746 is a deficient number, since it is larger than the sum of its proper divisors (8109820621376).

16219641242746 is an equidigital number, since it uses as much as digits as its factorization.

16219641242746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8109820621375.

The product of its digits is 6967296, while the sum is 55.

The spelling of 16219641242746 in words is "sixteen trillion, two hundred nineteen billion, six hundred forty-one million, two hundred forty-two thousand, seven hundred forty-six".