3961669080605 has 8 divisors (see below), whose sum is σ = 4754751243192. Its totient is φ = 3168836366848.

The previous prime is 3961669080529. The next prime is 3961669080631. The reversal of 3961669080605 is 5060809661693.

It can be written as a sum of positive squares in 4 ways, for example, as 49774502404 + 3911894578201 = 223102^2 + 1977851^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3961669080605 - 2¹⁰ = 3961669079581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62327264 + ... + 62390793.

It is an arithmetic number, because the mean of its divisors is an integer number (594343905399).

Almost surely, 2^{3961669080605} is an apocalyptic number.

It is an amenable number.

3961669080605 is a deficient number, since it is larger than the sum of its proper divisors (793082162587).

3961669080605 is a wasteful number, since it uses less digits than its factorization.

3961669080605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124724415.

The product of its (nonzero) digits is 12597120, while the sum is 59.

The spelling of 3961669080605 in words is "three trillion, nine hundred sixty-one billion, six hundred sixty-nine million, eighty thousand, six hundred five".