911329661661 has 8 divisors (see below), whose sum is σ = 1215111162720. Its totient is φ = 607550634192.

The previous prime is 911329661617. The next prime is 911329661707. The reversal of 911329661661 is 166166923119.

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

It is not a de Polignac number, because 911329661661 - 2¹⁴ = 911329645277 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (911329661861) 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 7 ways as a sum of consecutive naturals, for example, 564510 + ... + 1463328.

It is an arithmetic number, because the mean of its divisors is an integer number (151888895340).

Almost surely, 2^911329661661 is an apocalyptic number.

It is an amenable number.

911329661661 is a deficient number, since it is larger than the sum of its proper divisors (303781501059).

911329661661 is a wasteful number, since it uses less digits than its factorization.

911329661661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236795.

The product of its digits is 629856, while the sum is 51.

The spelling of 911329661661 in words is "nine hundred eleven billion, three hundred twenty-nine million, six hundred sixty-one thousand, six hundred sixty-one".