7776972471497 has 2 divisors, whose sum is σ = 7776972471498. Its totient is φ = 7776972471496.

The previous prime is 7776972471491. The next prime is 7776972471509. The reversal of 7776972471497 is 7941742796777.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4000884048841 + 3776088422656 = 2000221^2 + 1943216^2 .

It is a cyclic number.

It is not a de Polignac number, because 7776972471497 - 2¹⁸ = 7776972209353 is a prime.

It is not a weakly prime, because it can be changed into another prime (7776972471491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3888486235748 + 3888486235749.

It is an arithmetic number, because the mean of its divisors is an integer number (3888486235749).

Almost surely, 2^{7776972471497} is an apocalyptic number.

It is an amenable number.

7776972471497 is a deficient number, since it is larger than the sum of its proper divisors (1).

7776972471497 is an equidigital number, since it uses as much as digits as its factorization.

7776972471497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1829677248, while the sum is 77.

The spelling of 7776972471497 in words is "seven trillion, seven hundred seventy-six billion, nine hundred seventy-two million, four hundred seventy-one thousand, four hundred ninety-seven".