856424229007 has 2 divisors, whose sum is σ = 856424229008. Its totient is φ = 856424229006.

The previous prime is 856424228981. The next prime is 856424229013. The reversal of 856424229007 is 700922424658.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-856424229007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (856424229047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428212114503 + 428212114504.

It is an arithmetic number, because the mean of its divisors is an integer number (428212114504).

Almost surely, 2^856424229007 is an apocalyptic number.

856424229007 is a deficient number, since it is larger than the sum of its proper divisors (1).

856424229007 is an equidigital number, since it uses as much as digits as its factorization.

856424229007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 856424229007 in words is "eight hundred fifty-six billion, four hundred twenty-four million, two hundred twenty-nine thousand, seven".