3671216641 has 4 divisors (see below), whose sum is σ = 3688615984. Its totient is φ = 3653817300.

The previous prime is 3671216639. The next prime is 3671216687. The reversal of 3671216641 is 1466121763.

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 not a de Polignac number, because 3671216641 - 2¹ = 3671216639 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3671216641.

It is not an unprimeable number, because it can be changed into a prime (3671216041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8699355 + ... + 8699776.

It is an arithmetic number, because the mean of its divisors is an integer number (922153996).

Almost surely, 2^3671216641 is an apocalyptic number.

It is an amenable number.

3671216641 is a deficient number, since it is larger than the sum of its proper divisors (17399343).

3671216641 is a wasteful number, since it uses less digits than its factorization.

3671216641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17399342.

The product of its digits is 36288, while the sum is 37.

The square root of 3671216641 is about 60590.5656104975. The cubic root of 3671216641 is about 1542.6592387181.

The spelling of 3671216641 in words is "three billion, six hundred seventy-one million, two hundred sixteen thousand, six hundred forty-one".