3661742655727 has 8 divisors (see below), whose sum is σ = 3945121567520. Its totient is φ = 3378607515360.

The previous prime is 3661742655689. The next prime is 3661742655731. The reversal of 3661742655727 is 7275562471663.

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 3661742655727 - 2¹⁵ = 3661742622959 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 (3661742655797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60911652 + ... + 60971737.

It is an arithmetic number, because the mean of its divisors is an integer number (493140195940).

Almost surely, 2^{3661742655727} is an apocalyptic number.

3661742655727 is a deficient number, since it is larger than the sum of its proper divisors (283378911793).

3661742655727 is a wasteful number, since it uses less digits than its factorization.

3661742655727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121885713.

The product of its digits is 88905600, while the sum is 61.

The spelling of 3661742655727 in words is "three trillion, six hundred sixty-one billion, seven hundred forty-two million, six hundred fifty-five thousand, seven hundred twenty-seven".