12418863137 has 4 divisors (see below), whose sum is σ = 13149384516. Its totient is φ = 11688341760.

The previous prime is 12418863109. The next prime is 12418863139. The reversal of 12418863137 is 73136881421.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8116027921 + 4302835216 = 90089^2 + 65596^2 .

It is a cyclic number.

It is not a de Polignac number, because 12418863137 - 2⁸ = 12418862881 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12418863139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365260664 + ... + 365260697.

It is an arithmetic number, because the mean of its divisors is an integer number (3287346129).

Almost surely, 2^12418863137 is an apocalyptic number.

12418863137 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

12418863137 is a deficient number, since it is larger than the sum of its proper divisors (730521379).

12418863137 is an equidigital number, since it uses as much as digits as its factorization.

12418863137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 730521378.

The product of its digits is 193536, while the sum is 44.

The spelling of 12418863137 in words is "twelve billion, four hundred eighteen million, eight hundred sixty-three thousand, one hundred thirty-seven".