12961062245 has 4 divisors (see below), whose sum is σ = 15553274700. Its totient is φ = 10368849792.

The previous prime is 12961062209. The next prime is 12961062253. The reversal of 12961062245 is 54226016921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54226016921 = 89 ⋅609281089.

It can be written as a sum of positive squares in 2 ways, for example, as 8139287524 + 4821774721 = 90218^2 + 69439^2 .

It is a cyclic number.

It is not a de Polignac number, because 12961062245 - 2⁸ = 12961061989 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12961062199 and 12961062208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1296106220 + ... + 1296106229.

It is an arithmetic number, because the mean of its divisors is an integer number (3888318675).

Almost surely, 2^12961062245 is an apocalyptic number.

It is an amenable number.

12961062245 is a deficient number, since it is larger than the sum of its proper divisors (2592212455).

12961062245 is an equidigital number, since it uses as much as digits as its factorization.

12961062245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2592212454.

The product of its (nonzero) digits is 51840, while the sum is 38.

The spelling of 12961062245 in words is "twelve billion, nine hundred sixty-one million, sixty-two thousand, two hundred forty-five".