12840959750991 has 32 divisors (see below), whose sum is σ = 17683069587456. Its totient is φ = 8282361456000.

The previous prime is 12840959750981. The next prime is 12840959750999. The reversal of 12840959750991 is 19905795904821.

It is not a de Polignac number, because 12840959750991 - 2¹⁴ = 12840959734607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12840959750999) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 222398596 + ... + 222456326.

It is an arithmetic number, because the mean of its divisors is an integer number (552595924608).

Almost surely, 2^{12840959750991} is an apocalyptic number.

12840959750991 is a deficient number, since it is larger than the sum of its proper divisors (4842109836465).

12840959750991 is a wasteful number, since it uses less digits than its factorization.

12840959750991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69023.

The product of its (nonzero) digits is 73483200, while the sum is 69.

The spelling of 12840959750991 in words is "twelve trillion, eight hundred forty billion, nine hundred fifty-nine million, seven hundred fifty thousand, nine hundred ninety-one".