12511543412000 has 48 divisors (see below), whose sum is σ = 30740862173112. Its totient is φ = 5004617363200.

The previous prime is 12511543411973. The next prime is 12511543412033. The reversal of 12511543412000 is 21434511521.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 5447238580624 + 7064304831376 = 2333932^2 + 2657876^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1563938927 + ... + 1563946926.

Almost surely, 2^{12511543412000} is an apocalyptic number.

12511543412000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12511543412000 is an abundant number, since it is smaller than the sum of its proper divisors (18229318761112).

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

12511543412000 is an equidigital number, since it uses as much as digits as its factorization.

12511543412000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3127885878 (or 3127885860 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

Adding to 12511543412000 its reverse (21434511521), we get a palindrome (12532977923521).

The spelling of 12511543412000 in words is "twelve trillion, five hundred eleven billion, five hundred forty-three million, four hundred twelve thousand".