66513323093 has 24 divisors (see below), whose sum is σ = 79287594624. Its totient is φ = 55601380800.

The previous prime is 66513323083. The next prime is 66513323113. The reversal of 66513323093 is 39032331566.

It is a happy number.

It is not a de Polignac number, because 66513323093 - 2⁶ = 66513323029 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 66513323093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66513323083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10063796 + ... + 10070402.

It is an arithmetic number, because the mean of its divisors is an integer number (3303649776).

Almost surely, 2^66513323093 is an apocalyptic number.

It is an amenable number.

66513323093 is a deficient number, since it is larger than the sum of its proper divisors (12774271531).

66513323093 is a wasteful number, since it uses less digits than its factorization.

66513323093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11673 (or 11666 counting only the distinct ones).

The product of its (nonzero) digits is 262440, while the sum is 41.

The spelling of 66513323093 in words is "sixty-six billion, five hundred thirteen million, three hundred twenty-three thousand, ninety-three".