961998473272823 has 12 divisors (see below), whose sum is σ = 1131633150174720. Its totient is φ = 815305287136032.

The previous prime is 961998473272813. The next prime is 961998473272901. The reversal of 961998473272823 is 328272374899169.

It is not a de Polignac number, because 961998473272823 - 2¹⁶ = 961998473207287 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961998473272813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 110295624311 + ... + 110295633032.

It is an arithmetic number, because the mean of its divisors is an integer number (94302762514560).

Almost surely, 2^{961998473272823} is an apocalyptic number.

961998473272823 is a deficient number, since it is larger than the sum of its proper divisors (169634676901897).

961998473272823 is a wasteful number, since it uses less digits than its factorization.

961998473272823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220591257446 (or 220591257439 counting only the distinct ones).

The product of its digits is 3950456832, while the sum is 80.

The spelling of 961998473272823 in words is "nine hundred sixty-one trillion, nine hundred ninety-eight billion, four hundred seventy-three million, two hundred seventy-two thousand, eight hundred twenty-three".