66180771371 has 8 divisors (see below), whose sum is σ = 77750836464. Its totient is φ = 55536311520.

The previous prime is 66180771341. The next prime is 66180771379. The reversal of 66180771371 is 17317708166.

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 66180771371 - 2¹⁴ = 66180754987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66180771379) 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, 231401156 + ... + 231401441.

It is an arithmetic number, because the mean of its divisors is an integer number (9718854558).

Almost surely, 2^66180771371 is an apocalyptic number.

66180771371 is a deficient number, since it is larger than the sum of its proper divisors (11570065093).

66180771371 is a wasteful number, since it uses less digits than its factorization.

66180771371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462802621.

The product of its (nonzero) digits is 296352, while the sum is 47.

The spelling of 66180771371 in words is "sixty-six billion, one hundred eighty million, seven hundred seventy-one thousand, three hundred seventy-one".