10071821797 has 2 divisors, whose sum is σ = 10071821798. Its totient is φ = 10071821796.

The previous prime is 10071821761. The next prime is 10071821821. The reversal of 10071821797 is 79712817001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10018808836 + 53012961 = 100094^2 + 7281^2 .

It is a cyclic number.

It is not a de Polignac number, because 10071821797 - 2¹⁵ = 10071789029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10071828797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5035910898 + 5035910899.

It is an arithmetic number, because the mean of its divisors is an integer number (5035910899).

Almost surely, 2^10071821797 is an apocalyptic number.

It is an amenable number.

10071821797 is a deficient number, since it is larger than the sum of its proper divisors (1).

10071821797 is an equidigital number, since it uses as much as digits as its factorization.

10071821797 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 49392, while the sum is 43.

The spelling of 10071821797 in words is "ten billion, seventy-one million, eight hundred twenty-one thousand, seven hundred ninety-seven".