169669678145 has 12 divisors (see below), whose sum is σ = 223795708500. Its totient is φ = 123396129120.

The previous prime is 169669678127. The next prime is 169669678193. The reversal of 169669678145 is 541876966961.

It can be written as a sum of positive squares in 2 ways, for example, as 29859494401 + 139810183744 = 172799^2 + 373912^2 .

It is not a de Polignac number, because 169669678145 - 2¹⁸ = 169669416001 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 140222270 + ... + 140223479.

It is an arithmetic number, because the mean of its divisors is an integer number (18649642375).

Almost surely, 2^169669678145 is an apocalyptic number.

It is an amenable number.

169669678145 is a deficient number, since it is larger than the sum of its proper divisors (54126030355).

169669678145 is a wasteful number, since it uses less digits than its factorization.

169669678145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280445776 (or 280445765 counting only the distinct ones).

The product of its digits is 117573120, while the sum is 68.

The spelling of 169669678145 in words is "one hundred sixty-nine billion, six hundred sixty-nine million, six hundred seventy-eight thousand, one hundred forty-five".