66973146135 has 16 divisors (see below), whose sum is σ = 122465181696. Its totient is φ = 30616295328.

The previous prime is 66973146133. The next prime is 66973146187. The reversal of 66973146135 is 53164137966.

It is not a de Polignac number, because 66973146135 - 2¹ = 66973146133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66973146133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 318919639 + ... + 318919848.

It is an arithmetic number, because the mean of its divisors is an integer number (7654073856).

Almost surely, 2^66973146135 is an apocalyptic number.

66973146135 is a deficient number, since it is larger than the sum of its proper divisors (55492035561).

66973146135 is a wasteful number, since it uses less digits than its factorization.

66973146135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637839502.

The product of its digits is 2449440, while the sum is 51.

The spelling of 66973146135 in words is "sixty-six billion, nine hundred seventy-three million, one hundred forty-six thousand, one hundred thirty-five".