12566621522060 has 96 divisors (see below), whose sum is σ = 27856851886080. Its totient is φ = 4748732352000.

The previous prime is 12566621522027. The next prime is 12566621522089. The reversal of 12566621522060 is 6022512666521.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 227847407 + ... + 227902553.

It is an arithmetic number, because the mean of its divisors is an integer number (290175540480).

Almost surely, 2^{12566621522060} is an apocalyptic number.

12566621522060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12566621522060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13928425943040).

12566621522060 is an abundant number, since it is smaller than the sum of its proper divisors (15290230364020).

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

12566621522060 is a wasteful number, since it uses less digits than its factorization.

12566621522060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56847 (or 56845 counting only the distinct ones).

The product of its (nonzero) digits is 518400, while the sum is 44.

The spelling of 12566621522060 in words is "twelve trillion, five hundred sixty-six billion, six hundred twenty-one million, five hundred twenty-two thousand, sixty".