12645101305 has 8 divisors (see below), whose sum is σ = 15544222344. Its totient is φ = 9869347200.

The previous prime is 12645101303. The next prime is 12645101311. The reversal of 12645101305 is 50310154621.

It can be written as a sum of positive squares in 4 ways, for example, as 161061481 + 12484039824 = 12691^2 + 111732^2 .

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

It is not a de Polignac number, because 12645101305 - 2¹ = 12645101303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12645101303) 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, 30841506 + ... + 30841915.

It is an arithmetic number, because the mean of its divisors is an integer number (1943027793).

Almost surely, 2^12645101305 is an apocalyptic number.

It is an amenable number.

12645101305 is a deficient number, since it is larger than the sum of its proper divisors (2899121039).

12645101305 is an equidigital number, since it uses as much as digits as its factorization.

12645101305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61683467.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 12645101305 its reverse (50310154621), we get a palindrome (62955255926).

The spelling of 12645101305 in words is "twelve billion, six hundred forty-five million, one hundred one thousand, three hundred five".