12885811525020 has 384 divisors, whose sum is σ = 45164799590400. Its totient is φ = 2679411391488.

The previous prime is 12885811525019. The next prime is 12885811525033. The reversal of 12885811525020 is 2052511858821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 19554061 + ... + 20202299.

It is an arithmetic number, because the mean of its divisors is an integer number (117616665600).

Almost surely, 2^{12885811525020} is an apocalyptic number.

12885811525020 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 12885811525020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22582399795200).

12885811525020 is an abundant number, since it is smaller than the sum of its proper divisors (32278988065380).

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

12885811525020 is a wasteful number, since it uses less digits than its factorization.

12885811525020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648377 (or 648375 counting only the distinct ones).

The product of its (nonzero) digits is 512000, while the sum is 48.

The spelling of 12885811525020 in words is "twelve trillion, eight hundred eighty-five billion, eight hundred eleven million, five hundred twenty-five thousand, twenty".