169742769441 has 32 divisors (see below), whose sum is σ = 262250354688. Its totient is φ = 95648376960.

The previous prime is 169742769433. The next prime is 169742769467. The reversal of 169742769441 is 144967247961.

It is a happy number.

It is not a de Polignac number, because 169742769441 - 2³ = 169742769433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (169742769421) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12482556 + ... + 12496146.

It is an arithmetic number, because the mean of its divisors is an integer number (8195323584).

Almost surely, 2^169742769441 is an apocalyptic number.

It is an amenable number.

169742769441 is a deficient number, since it is larger than the sum of its proper divisors (92507585247).

169742769441 is a wasteful number, since it uses less digits than its factorization.

169742769441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21821.

The product of its digits is 18289152, while the sum is 60.

The spelling of 169742769441 in words is "one hundred sixty-nine billion, seven hundred forty-two million, seven hundred sixty-nine thousand, four hundred forty-one".