161000151556569 has 64 divisors (see below), whose sum is σ = 240554887668480. Its totient is φ = 95138577838080.

The previous prime is 161000151556567. The next prime is 161000151556571. The reversal of 161000151556569 is 965655151000161.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (161000151556567) and next prime (161000151556571).

It is not a de Polignac number, because 161000151556569 - 2¹ = 161000151556567 is a prime.

It is a super-2 number, since 2×161000151556569² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (161000151556561) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 203483077 + ... + 204272765.

It is an arithmetic number, because the mean of its divisors is an integer number (3758670119820).

Almost surely, 2^{161000151556569} is an apocalyptic number.

It is an amenable number.

161000151556569 is a deficient number, since it is larger than the sum of its proper divisors (79554736111911).

161000151556569 is a wasteful number, since it uses less digits than its factorization.

161000151556569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791802.

The product of its (nonzero) digits is 1215000, while the sum is 51.

The spelling of 161000151556569 in words is "one hundred sixty-one trillion, one hundred fifty-one million, five hundred fifty-six thousand, five hundred sixty-nine".