12650869872 has 160 divisors (see below), whose sum is σ = 38607528960. Its totient is φ = 3952512000.

The previous prime is 12650869871. The next prime is 12650869879. The reversal of 12650869872 is 27896805621.

12650869872 is a `hidden beast` number, since 1 + 2 + 6 + 508 + 69 + 8 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12650869871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1839913 + ... + 1846775.

It is an arithmetic number, because the mean of its divisors is an integer number (241297056).

Almost surely, 2^12650869872 is an apocalyptic number.

12650869872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12650869872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19303764480).

12650869872 is an abundant number, since it is smaller than the sum of its proper divisors (25956659088).

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

12650869872 is a wasteful number, since it uses less digits than its factorization.

12650869872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7148 (or 7136 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 54.

The spelling of 12650869872 in words is "twelve billion, six hundred fifty million, eight hundred sixty-nine thousand, eight hundred seventy-two".