12001956696 has 96 divisors (see below), whose sum is σ = 34160514960. Its totient is φ = 3801966336.

The previous prime is 12001956677. The next prime is 12001956697. The reversal of 12001956696 is 69665910021.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12001956697) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 62166 + ... + 166938.

Almost surely, 2^12001956696 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 12001956696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17080257480).

12001956696 is an abundant number, since it is smaller than the sum of its proper divisors (22158558264).

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

12001956696 is a wasteful number, since it uses less digits than its factorization.

12001956696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104865 (or 104858 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

It can be divided in two parts, 120019 and 56696, that added together give a triangular number (176715 = T₅₉₄).

The spelling of 12001956696 in words is "twelve billion, one million, nine hundred fifty-six thousand, six hundred ninety-six".