3217772347661 has 8 divisors (see below), whose sum is σ = 3455039738304. Its totient is φ = 2985836808640.

The previous prime is 3217772347613. The next prime is 3217772347667. The reversal of 3217772347661 is 1667432777123.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3217772347661 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3217772347597 and 3217772347606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3217772347667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1332961655 + ... + 1332964068.

It is an arithmetic number, because the mean of its divisors is an integer number (431879967288).

Almost surely, 2^{3217772347661} is an apocalyptic number.

It is an amenable number.

3217772347661 is a deficient number, since it is larger than the sum of its proper divisors (237267390643).

3217772347661 is a wasteful number, since it uses less digits than its factorization.

3217772347661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2665925811.

The product of its digits is 12446784, while the sum is 56.

The spelling of 3217772347661 in words is "three trillion, two hundred seventeen billion, seven hundred seventy-two million, three hundred forty-seven thousand, six hundred sixty-one".