991140303041241 has 16 divisors (see below), whose sum is σ = 1392631058609280. Its totient is φ = 625773759987200.

The previous prime is 991140303041191. The next prime is 991140303041249. The reversal of 991140303041241 is 142140303041199.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 991140303041241 - 2⁶ = 991140303041177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 991140303041193 and 991140303041202.

It is not an unprimeable number, because it can be changed into a prime (991140303041249) 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 15 ways as a sum of consecutive naturals, for example, 71110647576 + ... + 71110661513.

It is an arithmetic number, because the mean of its divisors is an integer number (87039441163080).

Almost surely, 2^{991140303041241} is an apocalyptic number.

It is an amenable number.

991140303041241 is a deficient number, since it is larger than the sum of its proper divisors (401490755568039).

991140303041241 is a wasteful number, since it uses less digits than its factorization.

991140303041241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142221309216.

The product of its (nonzero) digits is 93312, while the sum is 42.

Subtracting from 991140303041241 its sum of digits (42), we obtain a palindrome (991140303041199).

The spelling of 991140303041241 in words is "nine hundred ninety-one trillion, one hundred forty billion, three hundred three million, forty-one thousand, two hundred forty-one".