2856812521207 has 2 divisors, whose sum is σ = 2856812521208. Its totient is φ = 2856812521206.

The previous prime is 2856812521181. The next prime is 2856812521217. The reversal of 2856812521207 is 7021252186582.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2856812521207 is a prime.

It is a super-2 number, since 2×2856812521207² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2856812521217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1428406260603 + 1428406260604.

It is an arithmetic number, because the mean of its divisors is an integer number (1428406260604).

Almost surely, 2^{2856812521207} is an apocalyptic number.

2856812521207 is a deficient number, since it is larger than the sum of its proper divisors (1).

2856812521207 is an equidigital number, since it uses as much as digits as its factorization.

2856812521207 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1075200, while the sum is 49.

The spelling of 2856812521207 in words is "two trillion, eight hundred fifty-six billion, eight hundred twelve million, five hundred twenty-one thousand, two hundred seven".