165161611000101 has 16 divisors (see below), whose sum is σ = 220379725641600. Its totient is φ = 110025624158208.

The previous prime is 165161611000079. The next prime is 165161611000117. The reversal of 165161611000101 is 101000116161561.

It is a de Polignac number, because none of the positive numbers 2^k-165161611000101 is a prime.

It is a super-3 number, since 3×165161611000101³ (a number of 44 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165161611000801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118844485 + ... + 120226181.

It is an arithmetic number, because the mean of its divisors is an integer number (13773732852600).

Almost surely, 2^{165161611000101} is an apocalyptic number.

It is an amenable number.

165161611000101 is a deficient number, since it is larger than the sum of its proper divisors (55218114641499).

165161611000101 is a wasteful number, since it uses less digits than its factorization.

165161611000101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1411388.

The product of its (nonzero) digits is 1080, while the sum is 30.

Adding to 165161611000101 its reverse (101000116161561), we get a palindrome (266161727161662).

The spelling of 165161611000101 in words is "one hundred sixty-five trillion, one hundred sixty-one billion, six hundred eleven million, one hundred one", and thus it is an aban number.