12156017716 has 12 divisors (see below), whose sum is σ = 21277326532. Its totient is φ = 6076781568.

The previous prime is 12156017689. The next prime is 12156017723. The reversal of 12156017716 is 61771065121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5897625616 + 6258392100 = 76796^2 + 79110^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284355 + ... + 324298.

Almost surely, 2^12156017716 is an apocalyptic number.

It is an amenable number.

12156017716 is a deficient number, since it is larger than the sum of its proper divisors (9121308816).

12156017716 is a wasteful number, since it uses less digits than its factorization.

12156017716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613650 (or 613648 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 37.

The spelling of 12156017716 in words is "twelve billion, one hundred fifty-six million, seventeen thousand, seven hundred sixteen".