12005771537 has 8 divisors (see below), whose sum is σ = 12154908480. Its totient is φ = 11857343760.

The previous prime is 12005771521. The next prime is 12005771551. The reversal of 12005771537 is 73517750021.

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

It is a cyclic number.

It is not a de Polignac number, because 12005771537 - 2⁴ = 12005771521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12005771537.

It is not an unprimeable number, because it can be changed into a prime (12005776537) 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, 143183 + ... + 210980.

It is an arithmetic number, because the mean of its divisors is an integer number (1519363560).

Almost surely, 2^12005771537 is an apocalyptic number.

It is an amenable number.

12005771537 is a deficient number, since it is larger than the sum of its proper divisors (149136943).

12005771537 is a wasteful number, since it uses less digits than its factorization.

12005771537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354583.

The product of its (nonzero) digits is 51450, while the sum is 38.

The spelling of 12005771537 in words is "twelve billion, five million, seven hundred seventy-one thousand, five hundred thirty-seven".