12651031544 has 8 divisors (see below), whose sum is σ = 23720684160. Its totient is φ = 6325515768.

The previous prime is 12651031541. The next prime is 12651031567. The reversal of 12651031544 is 44513015621.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 12651031544.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12651031541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 790689464 + ... + 790689479.

It is an arithmetic number, because the mean of its divisors is an integer number (2965085520).

Almost surely, 2^12651031544 is an apocalyptic number.

It is an amenable number.

12651031544 is a deficient number, since it is larger than the sum of its proper divisors (11069652616).

12651031544 is a wasteful number, since it uses less digits than its factorization.

12651031544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1581378949 (or 1581378945 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 12651031544 in words is "twelve billion, six hundred fifty-one million, thirty-one thousand, five hundred forty-four".