66516849053 has 8 divisors (see below), whose sum is σ = 67168440768. Its totient is φ = 65865369024.

The previous prime is 66516849041. The next prime is 66516849097. The reversal of 66516849053 is 35094861566.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 66516849053 - 2¹⁰ = 66516848029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66516848986 and 66516849004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66516849013) 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, 1672325 + ... + 1711637.

It is an arithmetic number, because the mean of its divisors is an integer number (8396055096).

Almost surely, 2^66516849053 is an apocalyptic number.

It is an amenable number.

66516849053 is a deficient number, since it is larger than the sum of its proper divisors (651591715).

66516849053 is a wasteful number, since it uses less digits than its factorization.

66516849053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55843.

The product of its (nonzero) digits is 4665600, while the sum is 53.

The spelling of 66516849053 in words is "sixty-six billion, five hundred sixteen million, eight hundred forty-nine thousand, fifty-three".