776249742473 has 2 divisors, whose sum is σ = 776249742474. Its totient is φ = 776249742472.

The previous prime is 776249742409. The next prime is 776249742479. The reversal of 776249742473 is 374247942677.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 767861380729 + 8388361744 = 876277^2 + 91588^2 .

It is a cyclic number.

It is not a de Polignac number, because 776249742473 - 2⁶ = 776249742409 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (776249742479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 388124871236 + 388124871237.

It is an arithmetic number, because the mean of its divisors is an integer number (388124871237).

Almost surely, 2^776249742473 is an apocalyptic number.

It is an amenable number.

776249742473 is a deficient number, since it is larger than the sum of its proper divisors (1).

776249742473 is an equidigital number, since it uses as much as digits as its factorization.

776249742473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 99574272, while the sum is 62.

The spelling of 776249742473 in words is "seven hundred seventy-six billion, two hundred forty-nine million, seven hundred forty-two thousand, four hundred seventy-three".