12020463661512 has 128 divisors (see below), whose sum is σ = 31920966000000. Its totient is φ = 3759033593856.

The previous prime is 12020463661469. The next prime is 12020463661513. The reversal of 12020463661512 is 21516636402021.

It is a super-2 number, since 2×12020463661512² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12020463661513) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 469738414 + ... + 469764002.

It is an arithmetic number, because the mean of its divisors is an integer number (249382546875).

Almost surely, 2^{12020463661512} is an apocalyptic number.

12020463661512 is a gapful number since it is divisible by the number (12) 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 12020463661512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15960483000000).

12020463661512 is an abundant number, since it is smaller than the sum of its proper divisors (19900502338488).

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

12020463661512 is a wasteful number, since it uses less digits than its factorization.

12020463661512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29263 (or 29259 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 12020463661512 in words is "twelve trillion, twenty billion, four hundred sixty-three million, six hundred sixty-one thousand, five hundred twelve".