66176147645 has 8 divisors (see below), whose sum is σ = 80416584960. Its totient is φ = 52270779600.

The previous prime is 66176147599. The next prime is 66176147651. The reversal of 66176147645 is 54674167166.

It is a happy number.

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

It is not a de Polignac number, because 66176147645 - 2¹² = 66176143549 is a prime.

It is a congruent 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, 83766881 + ... + 83767670.

It is an arithmetic number, because the mean of its divisors is an integer number (10052073120).

Almost surely, 2^66176147645 is an apocalyptic number.

It is an amenable number.

66176147645 is a deficient number, since it is larger than the sum of its proper divisors (14240437315).

66176147645 is a wasteful number, since it uses less digits than its factorization.

66176147645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167534635.

The product of its digits is 5080320, while the sum is 53.

The spelling of 66176147645 in words is "sixty-six billion, one hundred seventy-six million, one hundred forty-seven thousand, six hundred forty-five".