12100561736 has 8 divisors (see below), whose sum is σ = 22688553270. Its totient is φ = 6050280864.

The previous prime is 12100561729. The next prime is 12100561741. The reversal of 12100561736 is 63716500121.

It can be written as a sum of positive squares in only one way, i.e., 10328656900 + 1771904836 = 101630^2 + 42094^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 756285101 + ... + 756285116.

Almost surely, 2^12100561736 is an apocalyptic number.

It is an amenable number.

12100561736 is a deficient number, since it is larger than the sum of its proper divisors (10587991534).

12100561736 is a wasteful number, since it uses less digits than its factorization.

12100561736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512570223 (or 1512570219 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 32.

The spelling of 12100561736 in words is "twelve billion, one hundred million, five hundred sixty-one thousand, seven hundred thirty-six".