12051663065 has 8 divisors (see below), whose sum is σ = 15574456968. Its totient is φ = 8899689600.

The previous prime is 12051663047. The next prime is 12051663077. The reversal of 12051663065 is 56036615021.

It can be written as a sum of positive squares in 4 ways, for example, as 87459904 + 11964203161 = 9352^2 + 109381^2 .

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

It is not a de Polignac number, because 12051663065 - 2²⁶ = 11984554201 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 92705036 + ... + 92705165.

It is an arithmetic number, because the mean of its divisors is an integer number (1946807121).

Almost surely, 2^12051663065 is an apocalyptic number.

It is an amenable number.

12051663065 is a deficient number, since it is larger than the sum of its proper divisors (3522793903).

12051663065 is a wasteful number, since it uses less digits than its factorization.

12051663065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185410219.

The product of its (nonzero) digits is 32400, while the sum is 35.

The spelling of 12051663065 in words is "twelve billion, fifty-one million, six hundred sixty-three thousand, sixty-five".