77923548697 has 2 divisors, whose sum is σ = 77923548698. Its totient is φ = 77923548696.

The previous prime is 77923548673. The next prime is 77923548721. The reversal of 77923548697 is 79684532977.

It is a balanced prime because it is at equal distance from previous prime (77923548673) and next prime (77923548721).

It can be written as a sum of positive squares in only one way, i.e., 67216266121 + 10707282576 = 259261^2 + 103476^2 .

It is a cyclic number.

It is not a de Polignac number, because 77923548697 - 2³¹ = 75776065049 is a prime.

It is not a weakly prime, because it can be changed into another prime (77923548497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38961774348 + 38961774349.

It is an arithmetic number, because the mean of its divisors is an integer number (38961774349).

Almost surely, 2^77923548697 is an apocalyptic number.

It is an amenable number.

77923548697 is a deficient number, since it is larger than the sum of its proper divisors (1).

77923548697 is an equidigital number, since it uses as much as digits as its factorization.

77923548697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 160030080, while the sum is 67.

The spelling of 77923548697 in words is "seventy-seven billion, nine hundred twenty-three million, five hundred forty-eight thousand, six hundred ninety-seven".