169728591442 has 16 divisors (see below), whose sum is σ = 256411463040. Its totient is φ = 84260142288.

The previous prime is 169728591391. The next prime is 169728591451. The reversal of 169728591442 is 244195827961.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 342717 + ... + 675952.

It is an arithmetic number, because the mean of its divisors is an integer number (16025716440).

Almost surely, 2^169728591442 is an apocalyptic number.

169728591442 is a deficient number, since it is larger than the sum of its proper divisors (86682871598).

169728591442 is a wasteful number, since it uses less digits than its factorization.

169728591442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1019265.

The product of its digits is 8709120, while the sum is 58.

The spelling of 169728591442 in words is "one hundred sixty-nine billion, seven hundred twenty-eight million, five hundred ninety-one thousand, four hundred forty-two".