12056253031657 has 16 divisors (see below), whose sum is σ = 12312439061760. Its totient is φ = 11801842041600.

The previous prime is 12056253031567. The next prime is 12056253031661. The reversal of 12056253031657 is 75613035265021.

It is a cyclic number.

It is not a de Polignac number, because 12056253031657 - 2¹¹ = 12056253029609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12056256031657) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29746107 + ... + 30148687.

It is an arithmetic number, because the mean of its divisors is an integer number (769527441360).

Almost surely, 2^{12056253031657} is an apocalyptic number.

It is an amenable number.

12056253031657 is a deficient number, since it is larger than the sum of its proper divisors (256186030103).

12056253031657 is a wasteful number, since it uses less digits than its factorization.

12056253031657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404784.

The product of its (nonzero) digits is 1134000, while the sum is 46.

Adding to 12056253031657 its reverse (75613035265021), we get a palindrome (87669288296678).

The spelling of 12056253031657 in words is "twelve trillion, fifty-six billion, two hundred fifty-three million, thirty-one thousand, six hundred fifty-seven".