1307852638647 has 4 divisors (see below), whose sum is σ = 1743803518200. Its totient is φ = 871901759096.

The previous prime is 1307852638643. The next prime is 1307852638663. The reversal of 1307852638647 is 7468362587031.

It is a happy number.

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 1307852638647 - 2² = 1307852638643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1307852638643) 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, 217975439772 + ... + 217975439777.

It is an arithmetic number, because the mean of its divisors is an integer number (435950879550).

Almost surely, 2^{1307852638647} is an apocalyptic number.

1307852638647 is a deficient number, since it is larger than the sum of its proper divisors (435950879553).

1307852638647 is an equidigital number, since it uses as much as digits as its factorization.

1307852638647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435950879552.

The product of its (nonzero) digits is 40642560, while the sum is 60.

The spelling of 1307852638647 in words is "one trillion, three hundred seven billion, eight hundred fifty-two million, six hundred thirty-eight thousand, six hundred forty-seven".