12621430522536 has 64 divisors (see below), whose sum is σ = 34544581963200. Its totient is φ = 3811064947200.

The previous prime is 12621430522531. The next prime is 12621430522577. The reversal of 12621430522536 is 63522503412621.

It is not an unprimeable number, because it can be changed into a prime (12621430522531) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84994231 + ... + 85142598.

It is an arithmetic number, because the mean of its divisors is an integer number (539759093175).

Almost surely, 2^{12621430522536} is an apocalyptic number.

It is an amenable number.

12621430522536 is an abundant number, since it is smaller than the sum of its proper divisors (21923151440664).

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

12621430522536 is a wasteful number, since it uses less digits than its factorization.

12621430522536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170137130 (or 170137126 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 42.

The spelling of 12621430522536 in words is "twelve trillion, six hundred twenty-one billion, four hundred thirty million, five hundred twenty-two thousand, five hundred thirty-six".