66331544513366 has 16 divisors (see below), whose sum is σ = 108542712407040. Its totient is φ = 30150650656680.

The previous prime is 66331544513347. The next prime is 66331544513389.

66331544513366 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12626915 + ... + 17090993.

It is an arithmetic number, because the mean of its divisors is an integer number (6783919525440).

Almost surely, 2^{66331544513366} is an apocalyptic number.

66331544513366 is a deficient number, since it is larger than the sum of its proper divisors (42211167893674).

66331544513366 is a wasteful number, since it uses less digits than its factorization.

66331544513366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5139499.

The product of its digits is 41990400, while the sum is 56.

The spelling of 66331544513366 in words is "sixty-six trillion, three hundred thirty-one billion, five hundred forty-four million, five hundred thirteen thousand, three hundred sixty-six".