3616661206831 has 4 divisors (see below), whose sum is σ = 3616665995232. Its totient is φ = 3616656418432.

The previous prime is 3616661206801. The next prime is 3616661206931. The reversal of 3616661206831 is 1386021666163.

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

It is a cyclic number.

It is not a de Polignac number, because 3616661206831 - 2¹³ = 3616661198639 is a prime.

It is a super-2 number, since 2×3616661206831² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3616661206801) 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, 984631 + ... + 2864056.

It is an arithmetic number, because the mean of its divisors is an integer number (904166498808).

Almost surely, 2^{3616661206831} is an apocalyptic number.

3616661206831 is a deficient number, since it is larger than the sum of its proper divisors (4788401).

3616661206831 is an equidigital number, since it uses as much as digits as its factorization.

3616661206831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4788400.

The product of its (nonzero) digits is 1119744, while the sum is 49.

The spelling of 3616661206831 in words is "three trillion, six hundred sixteen billion, six hundred sixty-one million, two hundred six thousand, eight hundred thirty-one".