165655142204101 has 8 divisors (see below), whose sum is σ = 191344977091584. Its totient is φ = 141737020067520.

The previous prime is 165655142204051. The next prime is 165655142204141. The reversal of 165655142204101 is 101402241556561.

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 165655142204101 - 2¹⁵ = 165655142171333 is a prime.

It is a super-2 number, since 2×165655142204101² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (165655142204141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 442928187525 + ... + 442928187898.

It is an arithmetic number, because the mean of its divisors is an integer number (23918122136448).

Almost surely, 2^{165655142204101} is an apocalyptic number.

165655142204101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

165655142204101 is a deficient number, since it is larger than the sum of its proper divisors (25689834887483).

165655142204101 is a wasteful number, since it uses less digits than its factorization.

165655142204101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885856375451.

The product of its (nonzero) digits is 288000, while the sum is 43.

The spelling of 165655142204101 in words is "one hundred sixty-five trillion, six hundred fifty-five billion, one hundred forty-two million, two hundred four thousand, one hundred one".