161626560611 has 8 divisors (see below), whose sum is σ = 162346716720. Its totient is φ = 160907112448.

The previous prime is 161626560593. The next prime is 161626560617. The reversal of 161626560611 is 116065626161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161626560611 - 2¹⁸ = 161626298467 is a prime.

It is a super-2 number, since 2×161626560611² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161626560617) 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 7 ways as a sum of consecutive naturals, for example, 283295 + ... + 635223.

It is an arithmetic number, because the mean of its divisors is an integer number (20293339590).

Almost surely, 2^161626560611 is an apocalyptic number.

161626560611 is a deficient number, since it is larger than the sum of its proper divisors (720156109).

161626560611 is a wasteful number, since it uses less digits than its factorization.

161626560611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 353973.

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 161626560611 in words is "one hundred sixty-one billion, six hundred twenty-six million, five hundred sixty thousand, six hundred eleven".