7770923247649 has 2 divisors, whose sum is σ = 7770923247650. Its totient is φ = 7770923247648.

The previous prime is 7770923247583. The next prime is 7770923247653. The reversal of 7770923247649 is 9467423290777.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7770535354624 + 387893025 = 2787568^2 + 19695^2 .

It is a cyclic number.

It is not a de Polignac number, because 7770923247649 - 2²³ = 7770914859041 is a prime.

It is not a weakly prime, because it can be changed into another prime (7770923247449) 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, 3885461623824 + 3885461623825.

It is an arithmetic number, because the mean of its divisors is an integer number (3885461623825).

Almost surely, 2^{7770923247649} is an apocalyptic number.

It is an amenable number.

7770923247649 is a deficient number, since it is larger than the sum of its proper divisors (1).

7770923247649 is an equidigital number, since it uses as much as digits as its factorization.

7770923247649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224042112, while the sum is 67.

The spelling of 7770923247649 in words is "seven trillion, seven hundred seventy billion, nine hundred twenty-three million, two hundred forty-seven thousand, six hundred forty-nine".