12649541796 has 96 divisors (see below), whose sum is σ = 33808642560. Its totient is φ = 4087065600.

The previous prime is 12649541791. The next prime is 12649541809. The reversal of 12649541796 is 69714594621.

12649541796 is a `hidden beast` number, since 1 + 2 + 6 + 4 + 9 + 541 + 7 + 96 = 666.

12649541796 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (12649541791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1077076 + ... + 1088756.

It is an arithmetic number, because the mean of its divisors is an integer number (352173360).

Almost surely, 2^12649541796 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12649541796, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16904321280).

12649541796 is an abundant number, since it is smaller than the sum of its proper divisors (21159100764).

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

12649541796 is a wasteful number, since it uses less digits than its factorization.

12649541796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12002 (or 11994 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 54.

The spelling of 12649541796 in words is "twelve billion, six hundred forty-nine million, five hundred forty-one thousand, seven hundred ninety-six".