66146731837 has 8 divisors (see below), whose sum is σ = 67647248640. Its totient is φ = 64662795600.

The previous prime is 66146731829. The next prime is 66146731883. The reversal of 66146731837 is 73813764166.

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

It is not a de Polignac number, because 66146731837 - 2³ = 66146731829 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 (66146731897) 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, 4137073 + ... + 4153030.

It is an arithmetic number, because the mean of its divisors is an integer number (8455906080).

Almost surely, 2^66146731837 is an apocalyptic number.

It is an amenable number.

66146731837 is a deficient number, since it is larger than the sum of its proper divisors (1500516803).

66146731837 is a wasteful number, since it uses less digits than its factorization.

66146731837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8290283.

The product of its digits is 3048192, while the sum is 52.

The spelling of 66146731837 in words is "sixty-six billion, one hundred forty-six million, seven hundred thirty-one thousand, eight hundred thirty-seven".