1531170667161 has 12 divisors (see below), whose sum is σ = 2218802514240. Its totient is φ = 1017498190680.

The previous prime is 1531170667087. The next prime is 1531170667193. The reversal of 1531170667161 is 1617660711351.

It is not a de Polignac number, because 1531170667161 - 2¹⁷ = 1531170536089 is a prime.

It is a super-2 number, since 2×1531170667161² (a number of 25 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1531170663161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 273518221 + ... + 273523818.

It is an arithmetic number, because the mean of its divisors is an integer number (184900209520).

Almost surely, 2^{1531170667161} is an apocalyptic number.

It is an amenable number.

1531170667161 is a deficient number, since it is larger than the sum of its proper divisors (687631847079).

1531170667161 is a wasteful number, since it uses less digits than its factorization.

1531170667161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547042356 (or 547042353 counting only the distinct ones).

The product of its (nonzero) digits is 158760, while the sum is 45.

The spelling of 1531170667161 in words is "one trillion, five hundred thirty-one billion, one hundred seventy million, six hundred sixty-seven thousand, one hundred sixty-one".