12721260499464 has 64 divisors (see below), whose sum is σ = 34697599706880. Its totient is φ = 3854565992000.

The previous prime is 12721260499463. The next prime is 12721260499513. The reversal of 12721260499464 is 46499406212721.

It is not an unprimeable number, because it can be changed into a prime (12721260499463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 568819 + ... + 5076029.

It is an arithmetic number, because the mean of its divisors is an integer number (542149995420).

Almost surely, 2^{12721260499464} is an apocalyptic number.

It is an amenable number.

12721260499464 is an abundant number, since it is smaller than the sum of its proper divisors (21976339207416).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12721260499464 is a wasteful number, since it uses less digits than its factorization.

12721260499464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4517922 (or 4517918 counting only the distinct ones).

The product of its (nonzero) digits is 10450944, while the sum is 57.

The spelling of 12721260499464 in words is "twelve trillion, seven hundred twenty-one billion, two hundred sixty million, four hundred ninety-nine thousand, four hundred sixty-four".