12617551648253 has 4 divisors (see below), whose sum is σ = 12622154916828. Its totient is φ = 12612948379680.

The previous prime is 12617551648241. The next prime is 12617551648297. The reversal of 12617551648253 is 35284615571621.

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 8902692452644 + 3714859195609 = 2983738^2 + 1927397^2 .

It is a cyclic number.

It is not a de Polignac number, because 12617551648253 - 2⁶ = 12617551648189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12613551648253) 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, 2301630176 + ... + 2301635657.

It is an arithmetic number, because the mean of its divisors is an integer number (3155538729207).

Almost surely, 2^{12617551648253} is an apocalyptic number.

It is an amenable number.

12617551648253 is a deficient number, since it is larger than the sum of its proper divisors (4603268575).

12617551648253 is an equidigital number, since it uses as much as digits as its factorization.

12617551648253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4603268574.

The product of its digits is 12096000, while the sum is 56.

The spelling of 12617551648253 in words is "twelve trillion, six hundred seventeen billion, five hundred fifty-one million, six hundred forty-eight thousand, two hundred fifty-three".