66116534015 has 8 divisors (see below), whose sum is σ = 90674103840. Its totient is φ = 45337051872.

The previous prime is 66116534009. The next prime is 66116534017. The reversal of 66116534015 is 51043561166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66116534015 - 2⁸ = 66116533759 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66116534015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66116534017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 944521880 + ... + 944521949.

It is an arithmetic number, because the mean of its divisors is an integer number (11334262980).

Almost surely, 2^66116534015 is an apocalyptic number.

66116534015 is a deficient number, since it is larger than the sum of its proper divisors (24557569825).

66116534015 is a wasteful number, since it uses less digits than its factorization.

66116534015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1889043841.

The product of its (nonzero) digits is 64800, while the sum is 38.

The spelling of 66116534015 in words is "sixty-six billion, one hundred sixteen million, five hundred thirty-four thousand, fifteen".