169041742961 has 12 divisors (see below), whose sum is σ = 211766579892. Its totient is φ = 133747312608.

The previous prime is 169041742943. The next prime is 169041742967. The reversal of 169041742961 is 169247140961.

It can be written as a sum of positive squares in 2 ways, for example, as 88339728400 + 80702014561 = 297220^2 + 284081^2 .

It is not a de Polignac number, because 169041742961 - 2⁶ = 169041742897 is a prime.

It is a super-2 number, since 2×169041742961² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (169041742967) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 132685190 + ... + 132686463.

It is an arithmetic number, because the mean of its divisors is an integer number (17647214991).

Almost surely, 2^169041742961 is an apocalyptic number.

It is an amenable number.

169041742961 is a deficient number, since it is larger than the sum of its proper divisors (42724836931).

169041742961 is a wasteful number, since it uses less digits than its factorization.

169041742961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265371680 (or 265371673 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 50.

The spelling of 169041742961 in words is "one hundred sixty-nine billion, forty-one million, seven hundred forty-two thousand, nine hundred sixty-one".