805824959651 has 2 divisors, whose sum is σ = 805824959652. Its totient is φ = 805824959650.

The previous prime is 805824959633. The next prime is 805824959659. The reversal of 805824959651 is 156959428508.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-805824959651 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (805824959659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402912479825 + 402912479826.

It is an arithmetic number, because the mean of its divisors is an integer number (402912479826).

Almost surely, 2^805824959651 is an apocalyptic number.

805824959651 is a deficient number, since it is larger than the sum of its proper divisors (1).

805824959651 is an equidigital number, since it uses as much as digits as its factorization.

805824959651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104000, while the sum is 62.

The spelling of 805824959651 in words is "eight hundred five billion, eight hundred twenty-four million, nine hundred fifty-nine thousand, six hundred fifty-one".