1567640271161 has 4 divisors (see below), whose sum is σ = 1568760816000. Its totient is φ = 1566519726324.

The previous prime is 1567640271143. The next prime is 1567640271163. The reversal of 1567640271161 is 1611720467651.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1567640271161 - 2¹⁸ = 1567640009017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1567640271163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 560270321 + ... + 560273118.

It is an arithmetic number, because the mean of its divisors is an integer number (392190204000).

Almost surely, 2^{1567640271161} is an apocalyptic number.

It is an amenable number.

1567640271161 is a deficient number, since it is larger than the sum of its proper divisors (1120544839).

1567640271161 is a wasteful number, since it uses less digits than its factorization.

1567640271161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1120544838.

The product of its (nonzero) digits is 423360, while the sum is 47.

The spelling of 1567640271161 in words is "one trillion, five hundred sixty-seven billion, six hundred forty million, two hundred seventy-one thousand, one hundred sixty-one".