12120877736 has 96 divisors (see below), whose sum is σ = 27128442240. Its totient is φ = 5017536000.

The previous prime is 12120877723. The next prime is 12120877739. The reversal of 12120877736 is 63777802121.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (12120877739) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1433441 + ... + 1441871.

It is an arithmetic number, because the mean of its divisors is an integer number (282587940).

Almost surely, 2^12120877736 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 12120877736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13564221120).

12120877736 is an abundant number, since it is smaller than the sum of its proper divisors (15007564504).

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

12120877736 is a wasteful number, since it uses less digits than its factorization.

12120877736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8527 (or 8492 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 44.

The spelling of 12120877736 in words is "twelve billion, one hundred twenty million, eight hundred seventy-seven thousand, seven hundred thirty-six".