66606106101155 has 8 divisors (see below), whose sum is σ = 80456647370784. Its totient is φ = 52932004848000.

The previous prime is 66606106100999. The next prime is 66606106101181. The reversal of 66606106101155 is 55110160160666.

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

It is not a de Polignac number, because 66606106101155 - 2¹⁶ = 66606106035619 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44110003286 + ... + 44110004795.

It is an arithmetic number, because the mean of its divisors is an integer number (10057080921348).

Almost surely, 2^{66606106101155} is an apocalyptic number.

66606106101155 is a deficient number, since it is larger than the sum of its proper divisors (13850541269629).

66606106101155 is a wasteful number, since it uses less digits than its factorization.

66606106101155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88220008237.

The product of its (nonzero) digits is 194400, while the sum is 44.

The spelling of 66606106101155 in words is "sixty-six trillion, six hundred six billion, one hundred six million, one hundred one thousand, one hundred fifty-five".