8151385997 has 2 divisors, whose sum is σ = 8151385998. Its totient is φ = 8151385996.

The previous prime is 8151385943. The next prime is 8151386003. The reversal of 8151385997 is 7995831518.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8149395076 + 1990921 = 90274^2 + 1411^2 .

It is a cyclic number.

It is not a de Polignac number, because 8151385997 - 2¹⁸ = 8151123853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8151385597) 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, 4075692998 + 4075692999.

It is an arithmetic number, because the mean of its divisors is an integer number (4075692999).

Almost surely, 2^8151385997 is an apocalyptic number.

It is an amenable number.

8151385997 is a deficient number, since it is larger than the sum of its proper divisors (1).

8151385997 is an equidigital number, since it uses as much as digits as its factorization.

8151385997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 56.

The square root of 8151385997 is about 90285.0264274204. The cubic root of 8151385997 is about 2012.5367504933.

The spelling of 8151385997 in words is "eight billion, one hundred fifty-one million, three hundred eighty-five thousand, nine hundred ninety-seven".