8356051381 has 2 divisors, whose sum is σ = 8356051382. Its totient is φ = 8356051380.

The previous prime is 8356051367. The next prime is 8356051421. The reversal of 8356051381 is 1831506538.

It is an a-pointer prime, because the next prime (8356051421) can be obtained adding 8356051381 to its sum of digits (40).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5050376356 + 3305675025 = 71066^2 + 57495^2 .

It is a cyclic number.

It is not a de Polignac number, because 8356051381 - 2¹⁹ = 8355527093 is a prime.

It is a super-2 number, since 2×8356051381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8356051481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4178025690 + 4178025691.

It is an arithmetic number, because the mean of its divisors is an integer number (4178025691).

Almost surely, 2^8356051381 is an apocalyptic number.

It is an amenable number.

8356051381 is a deficient number, since it is larger than the sum of its proper divisors (1).

8356051381 is an equidigital number, since it uses as much as digits as its factorization.

8356051381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 8356051381 is about 91411.4400991473. The cubic root of 8356051381 is about 2029.2413369424.

The spelling of 8356051381 in words is "eight billion, three hundred fifty-six million, fifty-one thousand, three hundred eighty-one".