66103601325171 has 4 divisors (see below), whose sum is σ = 88138135100232. Its totient is φ = 44069067550112.

The previous prime is 66103601325119. The next prime is 66103601325197. The reversal of 66103601325171 is 17152310630166.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66103601325171 - 2⁴² = 61705554814067 is a prime.

It is a super-2 number, since 2×66103601325171² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (66103601325271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11017266887526 + ... + 11017266887531.

It is an arithmetic number, because the mean of its divisors is an integer number (22034533775058).

Almost surely, 2^{66103601325171} is an apocalyptic number.

66103601325171 is a deficient number, since it is larger than the sum of its proper divisors (22034533775061).

66103601325171 is a wasteful number, since it uses less digits than its factorization.

66103601325171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22034533775060.

The product of its (nonzero) digits is 136080, while the sum is 42.

The spelling of 66103601325171 in words is "sixty-six trillion, one hundred three billion, six hundred one million, three hundred twenty-five thousand, one hundred seventy-one".