66147366129 has 32 divisors (see below), whose sum is σ = 100605576960. Its totient is φ = 38297260032.

The previous prime is 66147366079. The next prime is 66147366149. The reversal of 66147366129 is 92166374166.

It is not a de Polignac number, because 66147366129 - 2²⁰ = 66146317553 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (66147366149) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1903492 + ... + 1937930.

It is an arithmetic number, because the mean of its divisors is an integer number (3143924280).

Almost surely, 2^66147366129 is an apocalyptic number.

It is an amenable number.

66147366129 is a deficient number, since it is larger than the sum of its proper divisors (34458210831).

66147366129 is a wasteful number, since it uses less digits than its factorization.

66147366129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37369.

The product of its digits is 1959552, while the sum is 51.

The spelling of 66147366129 in words is "sixty-six billion, one hundred forty-seven million, three hundred sixty-six thousand, one hundred twenty-nine".