66292443971 has 8 divisors (see below), whose sum is σ = 71790702480. Its totient is φ = 60851162592.

The previous prime is 66292443961. The next prime is 66292444013. The reversal of 66292443971 is 17934429266.

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 66292443971 - 2⁶ = 66292443907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66292443961) 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, 14241860 + ... + 14246513.

It is an arithmetic number, because the mean of its divisors is an integer number (8973837810).

Almost surely, 2^66292443971 is an apocalyptic number.

66292443971 is a deficient number, since it is larger than the sum of its proper divisors (5498258509).

66292443971 is a wasteful number, since it uses less digits than its factorization.

66292443971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28488565.

The product of its digits is 3919104, while the sum is 53.

The spelling of 66292443971 in words is "sixty-six billion, two hundred ninety-two million, four hundred forty-three thousand, nine hundred seventy-one".