1245641107247 has 4 divisors (see below), whose sum is σ = 1245651986040. Its totient is φ = 1245630228456.

The previous prime is 1245641107213. The next prime is 1245641107267. The reversal of 1245641107247 is 7427011465421.

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

It is a cyclic number.

It is not a de Polignac number, because 1245641107247 - 2¹⁰ = 1245641106223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1245641107198 and 1245641107207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1245641107267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5265797 + ... + 5497262.

It is an arithmetic number, because the mean of its divisors is an integer number (311412996510).

Almost surely, 2^{1245641107247} is an apocalyptic number.

1245641107247 is a deficient number, since it is larger than the sum of its proper divisors (10878793).

1245641107247 is a wasteful number, since it uses less digits than its factorization.

1245641107247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10878792.

The product of its (nonzero) digits is 376320, while the sum is 44.

The spelling of 1245641107247 in words is "one trillion, two hundred forty-five billion, six hundred forty-one million, one hundred seven thousand, two hundred forty-seven".