12620395253 has 4 divisors (see below), whose sum is σ = 12622634208. Its totient is φ = 12618156300.

The previous prime is 12620395237. The next prime is 12620395261. The reversal of 12620395253 is 35259302621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 12620395253 - 2⁴ = 12620395237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12620395223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1111001 + ... + 1122302.

It is an arithmetic number, because the mean of its divisors is an integer number (3155658552).

Almost surely, 2^12620395253 is an apocalyptic number.

It is an amenable number.

12620395253 is a deficient number, since it is larger than the sum of its proper divisors (2238955).

12620395253 is an equidigital number, since it uses as much as digits as its factorization.

12620395253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238954.

The product of its (nonzero) digits is 97200, while the sum is 38.

Adding to 12620395253 its reverse (35259302621), we get a palindrome (47879697874).

The spelling of 12620395253 in words is "twelve billion, six hundred twenty million, three hundred ninety-five thousand, two hundred fifty-three".