12251541556116 has 18 divisors (see below), whose sum is σ = 30969174489162. Its totient is φ = 4083847185360.

The previous prime is 12251541556099. The next prime is 12251541556117. The reversal of 12251541556116 is 61165514515221.

12251541556116 is a `hidden beast` number, since 1 + 2 + 2 + 5 + 15 + 4 + 15 + 5 + 611 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 8739650564100 + 3511890992016 = 2956290^2 + 1874004^2 .

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12251541556117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 170160299355 + ... + 170160299426.

Almost surely, 2^{12251541556116} is an apocalyptic number.

It is an amenable number.

12251541556116 is an abundant number, since it is smaller than the sum of its proper divisors (18717632933046).

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

12251541556116 is a wasteful number, since it uses less digits than its factorization.

12251541556116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340320598791 (or 340320598786 counting only the distinct ones).

The product of its digits is 360000, while the sum is 45.

The spelling of 12251541556116 in words is "twelve trillion, two hundred fifty-one billion, five hundred forty-one million, five hundred fifty-six thousand, one hundred sixteen".