16025866489642 has 16 divisors (see below), whose sum is σ = 24381000031752. Its totient is φ = 7899547475200.

The previous prime is 16025866489559. The next prime is 16025866489729. The reversal of 16025866489642 is 24698466852061.

It can be written as a sum of positive squares in 4 ways, for example, as 15735906856201 + 289959633441 = 3966851^2 + 538479^2 .

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 in 7 ways as a sum of consecutive naturals, for example, 170201803 + ... + 170295934.

Almost surely, 2^{16025866489642} is an apocalyptic number.

16025866489642 is a deficient number, since it is larger than the sum of its proper divisors (8355133542110).

16025866489642 is a wasteful number, since it uses less digits than its factorization.

16025866489642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340498073.

The product of its (nonzero) digits is 238878720, while the sum is 67.

The spelling of 16025866489642 in words is "sixteen trillion, twenty-five billion, eight hundred sixty-six million, four hundred eighty-nine thousand, six hundred forty-two".