66662370513 has 12 divisors (see below), whose sum is σ = 96296997888. Its totient is φ = 44438392440.

The previous prime is 66662370503. The next prime is 66662370547. The reversal of 66662370513 is 31507326666.

It is not a de Polignac number, because 66662370513 - 2¹⁸ = 66662108369 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66662370503) 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 11 ways as a sum of consecutive naturals, for example, 129553 + ... + 387438.

It is an arithmetic number, because the mean of its divisors is an integer number (8024749824).

Almost surely, 2^66662370513 is an apocalyptic number.

It is an amenable number.

66662370513 is a deficient number, since it is larger than the sum of its proper divisors (29634627375).

66662370513 is a wasteful number, since it uses less digits than its factorization.

66662370513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531324 (or 531321 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 45.

The spelling of 66662370513 in words is "sixty-six billion, six hundred sixty-two million, three hundred seventy thousand, five hundred thirteen".