12511541052 has 18 divisors (see below), whose sum is σ = 31626395528. Its totient is φ = 4170513672.

The previous prime is 12511541041. The next prime is 12511541071. The reversal of 12511541052 is 25014511521.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 173771368 + ... + 173771439.

Almost surely, 2^12511541052 is an apocalyptic number.

12511541052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12511541052 is an abundant number, since it is smaller than the sum of its proper divisors (19114854476).

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

12511541052 is a wasteful number, since it uses less digits than its factorization.

12511541052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347542817 (or 347542812 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 27.

Subtracting from 12511541052 its sum of digits (27), we obtain a square (12511541025 = 111855²).

The spelling of 12511541052 in words is "twelve billion, five hundred eleven million, five hundred forty-one thousand, fifty-two".