66348349741 has 4 divisors (see below), whose sum is σ = 68636223900. Its totient is φ = 64060475584.

The previous prime is 66348349709. The next prime is 66348349763. The reversal of 66348349741 is 14794384366.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14794384366 = 2 ⋅7397192183.

It can be written as a sum of positive squares in 2 ways, for example, as 52084824841 + 14263524900 = 228221^2 + 119430^2 .

It is a cyclic number.

It is not a de Polignac number, because 66348349741 - 2⁵ = 66348349709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66348349541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1143937036 + ... + 1143937093.

It is an arithmetic number, because the mean of its divisors is an integer number (17159055975).

Almost surely, 2^66348349741 is an apocalyptic number.

It is an amenable number.

66348349741 is a deficient number, since it is larger than the sum of its proper divisors (2287874159).

66348349741 is a wasteful number, since it uses less digits than its factorization.

66348349741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2287874158.

The product of its digits is 10450944, while the sum is 55.

The spelling of 66348349741 in words is "sixty-six billion, three hundred forty-eight million, three hundred forty-nine thousand, seven hundred forty-one".