66147170407 has 8 divisors (see below), whose sum is σ = 67560032880. Its totient is φ = 64740411840.

The previous prime is 66147170393. The next prime is 66147170443. The reversal of 66147170407 is 70407174166.

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 66147170407 - 2³¹ = 63999686759 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66147170807) 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, 1504069 + ... + 1547422.

It is an arithmetic number, because the mean of its divisors is an integer number (8445004110).

Almost surely, 2^66147170407 is an apocalyptic number.

66147170407 is a deficient number, since it is larger than the sum of its proper divisors (1412862473).

66147170407 is a wasteful number, since it uses less digits than its factorization.

66147170407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3051953.

The product of its (nonzero) digits is 197568, while the sum is 43.

The spelling of 66147170407 in words is "sixty-six billion, one hundred forty-seven million, one hundred seventy thousand, four hundred seven".