66101109 has 8 divisors (see below), whose sum is σ = 88181472. Its totient is φ = 44044080.

The previous prime is 66101107. The next prime is 66101131. The reversal of 66101109 is 90110166.

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

It is not a de Polignac number, because 66101109 - 2¹ = 66101107 is a prime.

It is a super-2 number, since 2×66101109² = 8738713222059762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66101107) 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, 2467 + ... + 11759.

It is an arithmetic number, because the mean of its divisors is an integer number (11022684).

Almost surely, 2^66101109 is an apocalyptic number.

It is an amenable number.

66101109 is a deficient number, since it is larger than the sum of its proper divisors (22080363).

66101109 is a wasteful number, since it uses less digits than its factorization.

66101109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11667.

The product of its (nonzero) digits is 324, while the sum is 24.

The square root of 66101109 is about 8130.2588519678. The cubic root of 66101109 is about 404.3302633044.

The spelling of 66101109 in words is "sixty-six million, one hundred one thousand, one hundred nine".