3679561661247 has 12 divisors (see below), whose sum is σ = 5315091371304. Its totient is φ = 2452963120560.

The previous prime is 3679561661227. The next prime is 3679561661297. The reversal of 3679561661247 is 7421661659763.

It is a happy number.

3679561661247 is a `hidden beast` number, since 3 + 6 + 7 + 9 + 5 + 6 + 1 + 6 + 612 + 4 + 7 = 666.

3679561661247 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3679561661247 - 2⁸ = 3679561660991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3679561661227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6199368 + ... + 6766925.

It is an arithmetic number, because the mean of its divisors is an integer number (442924280942).

Almost surely, 2^{3679561661247} is an apocalyptic number.

3679561661247 is a deficient number, since it is larger than the sum of its proper divisors (1635529710057).

3679561661247 is a wasteful number, since it uses less digits than its factorization.

3679561661247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12997830 (or 12997827 counting only the distinct ones).

The product of its digits is 68584320, while the sum is 63.

The spelling of 3679561661247 in words is "three trillion, six hundred seventy-nine billion, five hundred sixty-one million, six hundred sixty-one thousand, two hundred forty-seven".