155666665066101 has 16 divisors (see below), whose sum is σ = 237293844584448. Its totient is φ = 88919568356400.

The previous prime is 155666665066079. The next prime is 155666665066141. The reversal of 155666665066101 is 101660566666551.

It is not a de Polignac number, because 155666665066101 - 2⁶ = 155666665066037 is a prime.

It is a super-2 number, since 2×155666665066101² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155666665066141) 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, 1367095105 + ... + 1367208966.

It is an arithmetic number, because the mean of its divisors is an integer number (14830865286528).

Almost surely, 2^{155666665066101} is an apocalyptic number.

It is an amenable number.

155666665066101 is a deficient number, since it is larger than the sum of its proper divisors (81627179518347).

155666665066101 is a wasteful number, since it uses less digits than its factorization.

155666665066101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2734306792.

The product of its (nonzero) digits is 34992000, while the sum is 60.

The spelling of 155666665066101 in words is "one hundred fifty-five trillion, six hundred sixty-six billion, six hundred sixty-five million, sixty-six thousand, one hundred one".