12545012844 has 144 divisors (see below), whose sum is σ = 41324931648. Its totient is φ = 3113938944.

The previous prime is 12545012819. The next prime is 12545012863. The reversal of 12545012844 is 44821054521.

12545012844 is a `hidden beast` number, since 125 + 4 + 501 + 28 + 4 + 4 = 666.

It is a super-2 number, since 2×12545012844² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 12545012799 and 12545012808.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 56937 + ... + 168320.

It is an arithmetic number, because the mean of its divisors is an integer number (286978692).

Almost surely, 2^12545012844 is an apocalyptic number.

12545012844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12545012844 is an abundant number, since it is smaller than the sum of its proper divisors (28779918804).

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

12545012844 is a wasteful number, since it uses less digits than its factorization.

12545012844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225304 (or 225299 counting only the distinct ones).

The product of its (nonzero) digits is 51200, while the sum is 36.

The spelling of 12545012844 in words is "twelve billion, five hundred forty-five million, twelve thousand, eight hundred forty-four".