169681600079 has 4 divisors (see below), whose sum is σ = 177059060976. Its totient is φ = 162304139184.

The previous prime is 169681600063. The next prime is 169681600103. The reversal of 169681600079 is 970006186961.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 169681600079 - 2⁴ = 169681600063 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 169681600079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169681600009) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 3688730414 + ... + 3688730459.

It is an arithmetic number, because the mean of its divisors is an integer number (44264765244).

Almost surely, 2^169681600079 is an apocalyptic number.

169681600079 is a deficient number, since it is larger than the sum of its proper divisors (7377460897).

169681600079 is an equidigital number, since it uses as much as digits as its factorization.

169681600079 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7377460896.

The product of its (nonzero) digits is 979776, while the sum is 53.

The spelling of 169681600079 in words is "one hundred sixty-nine billion, six hundred eighty-one million, six hundred thousand, seventy-nine".