3683661687161 has 4 divisors (see below), whose sum is σ = 3708056797824. Its totient is φ = 3659266576500.

The previous prime is 3683661687137. The next prime is 3683661687187. The reversal of 3683661687161 is 1617861663863.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3683661687161 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3683661687094 and 3683661687103.

It is not an unprimeable number, because it can be changed into a prime (3683661687131) 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 3 ways as a sum of consecutive naturals, for example, 12197555105 + ... + 12197555406.

It is an arithmetic number, because the mean of its divisors is an integer number (927014199456).

Almost surely, 2^{3683661687161} is an apocalyptic number.

It is an amenable number.

3683661687161 is a deficient number, since it is larger than the sum of its proper divisors (24395110663).

3683661687161 is a wasteful number, since it uses less digits than its factorization.

3683661687161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24395110662.

The product of its digits is 31352832, while the sum is 62.

The spelling of 3683661687161 in words is "three trillion, six hundred eighty-three billion, six hundred sixty-one million, six hundred eighty-seven thousand, one hundred sixty-one".