12609771744 has 24 divisors (see below), whose sum is σ = 33100651080. Its totient is φ = 4203257216.

The previous prime is 12609771721. The next prime is 12609771751. The reversal of 12609771744 is 44717790621.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 12609771693 and 12609771702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65675799 + ... + 65675990.

It is an arithmetic number, because the mean of its divisors is an integer number (1379193795).

Almost surely, 2^12609771744 is an apocalyptic number.

It is an amenable number.

12609771744 is an abundant number, since it is smaller than the sum of its proper divisors (20490879336).

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

12609771744 is a wasteful number, since it uses less digits than its factorization.

12609771744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131351802 (or 131351794 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 48.

The spelling of 12609771744 in words is "twelve billion, six hundred nine million, seven hundred seventy-one thousand, seven hundred forty-four".