12840335481 has 16 divisors (see below), whose sum is σ = 17737680960. Its totient is φ = 8252502720.

The previous prime is 12840335477. The next prime is 12840335503. The reversal of 12840335481 is 18453304821.

It is not a de Polignac number, because 12840335481 - 2² = 12840335477 is a prime.

It is a super-2 number, since 2×12840335481² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12840335411) 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 15 ways as a sum of consecutive naturals, for example, 54135 + ... + 169148.

It is an arithmetic number, because the mean of its divisors is an integer number (1108605060).

Almost surely, 2^12840335481 is an apocalyptic number.

It is an amenable number.

12840335481 is a deficient number, since it is larger than the sum of its proper divisors (4897345479).

12840335481 is a wasteful number, since it uses less digits than its factorization.

12840335481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223976.

The product of its (nonzero) digits is 92160, while the sum is 39.

The spelling of 12840335481 in words is "twelve billion, eight hundred forty million, three hundred thirty-five thousand, four hundred eighty-one".