12617181057 has 16 divisors (see below), whose sum is σ = 19182683520. Its totient is φ = 7307688192.

The previous prime is 12617181011. The next prime is 12617181089. The reversal of 12617181057 is 75018171621.

It is not a de Polignac number, because 12617181057 - 2¹² = 12617176961 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (12617181557) 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, 9514557 + ... + 9515882.

It is an arithmetic number, because the mean of its divisors is an integer number (1198917720).

Almost surely, 2^12617181057 is an apocalyptic number.

12617181057 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12617181057 is a deficient number, since it is larger than the sum of its proper divisors (6565502463).

12617181057 is a wasteful number, since it uses less digits than its factorization.

12617181057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19030472.

The product of its (nonzero) digits is 23520, while the sum is 39.

The spelling of 12617181057 in words is "twelve billion, six hundred seventeen million, one hundred eighty-one thousand, fifty-seven".