772723552609 has 2 divisors, whose sum is σ = 772723552610. Its totient is φ = 772723552608.

The previous prime is 772723552607. The next prime is 772723552631. The reversal of 772723552609 is 906255327277.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 468262384209 + 304461168400 = 684297^2 + 551780^2 .

It is an emirp because it is prime and its reverse (906255327277) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 772723552609 - 2¹ = 772723552607 is a prime.

Together with 772723552607, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 772723552609.

It is not a weakly prime, because it can be changed into another prime (772723552607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 386361776304 + 386361776305.

It is an arithmetic number, because the mean of its divisors is an integer number (386361776305).

Almost surely, 2^772723552609 is an apocalyptic number.

It is an amenable number.

772723552609 is a deficient number, since it is larger than the sum of its proper divisors (1).

772723552609 is an equidigital number, since it uses as much as digits as its factorization.

772723552609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11113200, while the sum is 55.

The spelling of 772723552609 in words is "seven hundred seventy-two billion, seven hundred twenty-three million, five hundred fifty-two thousand, six hundred nine".