12506271648 has 48 divisors (see below), whose sum is σ = 35354271456. Its totient is φ = 3848083200.

The previous prime is 12506271647. The next prime is 12506271671. The reversal of 12506271648 is 84617260521.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (12506271647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5009278 + ... + 5011773.

It is an arithmetic number, because the mean of its divisors is an integer number (736547322).

Almost surely, 2^12506271648 is an apocalyptic number.

It is an amenable number.

12506271648 is an abundant number, since it is smaller than the sum of its proper divisors (22847999808).

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

12506271648 is a wasteful number, since it uses less digits than its factorization.

12506271648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10021077 (or 10021069 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 12506271648 in words is "twelve billion, five hundred six million, two hundred seventy-one thousand, six hundred forty-eight".