12276617561 has 8 divisors (see below), whose sum is σ = 13231014720. Its totient is φ = 11323654992.

The previous prime is 12276617503. The next prime is 12276617581. The reversal of 12276617561 is 16571667221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-12276617561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12276617581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 340835 + ... + 375128.

It is an arithmetic number, because the mean of its divisors is an integer number (1653876840).

Almost surely, 2^12276617561 is an apocalyptic number.

It is an amenable number.

12276617561 is a deficient number, since it is larger than the sum of its proper divisors (954397159).

12276617561 is a wasteful number, since it uses less digits than its factorization.

12276617561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717295.

The product of its digits is 211680, while the sum is 44.

The spelling of 12276617561 in words is "twelve billion, two hundred seventy-six million, six hundred seventeen thousand, five hundred sixty-one".