66546546640113 has 4 divisors (see below), whose sum is σ = 88728728853488. Its totient is φ = 44364364426740.

The previous prime is 66546546640109. The next prime is 66546546640151. The reversal of 66546546640113 is 31104664564566.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 66546546640113 - 2² = 66546546640109 is a prime.

It is a super-4 number, since 4×66546546640113⁴ (a number of 56 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66546546640153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11091091106683 + ... + 11091091106688.

It is an arithmetic number, because the mean of its divisors is an integer number (22182182213372).

Almost surely, 2^{66546546640113} is an apocalyptic number.

It is an amenable number.

66546546640113 is a deficient number, since it is larger than the sum of its proper divisors (22182182213375).

66546546640113 is a wasteful number, since it uses less digits than its factorization.

66546546640113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22182182213374.

The product of its (nonzero) digits is 37324800, while the sum is 57.

The spelling of 66546546640113 in words is "sixty-six trillion, five hundred forty-six billion, five hundred forty-six million, six hundred forty thousand, one hundred thirteen".