169021134505 has 16 divisors (see below), whose sum is σ = 203848722000. Its totient is φ = 134536354560.

The previous prime is 169021134473. The next prime is 169021134521. The reversal of 169021134505 is 505431120961.

It can be written as a sum of positive squares in 8 ways, for example, as 6566995369 + 162454139136 = 81037^2 + 403056^2 .

It is not a de Polignac number, because 169021134505 - 2⁵ = 169021134473 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 699391 + ... + 909499.

It is an arithmetic number, because the mean of its divisors is an integer number (12740545125).

Almost surely, 2^169021134505 is an apocalyptic number.

It is an amenable number.

169021134505 is a deficient number, since it is larger than the sum of its proper divisors (34827587495).

169021134505 is a wasteful number, since it uses less digits than its factorization.

169021134505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210924.

The product of its (nonzero) digits is 32400, while the sum is 37.

The spelling of 169021134505 in words is "one hundred sixty-nine billion, twenty-one million, one hundred thirty-four thousand, five hundred five".