3561646877863 has 4 divisors (see below), whose sum is σ = 3716501089968. Its totient is φ = 3406792665760.

The previous prime is 3561646877857. The next prime is 3561646877869. The reversal of 3561646877863 is 3687786461653.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (3561646877857) and next prime (3561646877869).

It is a cyclic number.

It is not a de Polignac number, because 3561646877863 - 2⁹ = 3561646877351 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3561646877792 and 3561646877801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3561646877869) 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, 77427106018 + ... + 77427106063.

It is an arithmetic number, because the mean of its divisors is an integer number (929125272492).

Almost surely, 2^{3561646877863} is an apocalyptic number.

3561646877863 is a deficient number, since it is larger than the sum of its proper divisors (154854212105).

3561646877863 is a wasteful number, since it uses less digits than its factorization.

3561646877863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154854212104.

The product of its digits is 731566080, while the sum is 70.

The spelling of 3561646877863 in words is "three trillion, five hundred sixty-one billion, six hundred forty-six million, eight hundred seventy-seven thousand, eight hundred sixty-three".