77329823489 has 2 divisors, whose sum is σ = 77329823490. Its totient is φ = 77329823488.

The previous prime is 77329823479. The next prime is 77329823491. The reversal of 77329823489 is 98432892377.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39833373889 + 37496449600 = 199583^2 + 193640^2 .

It is a cyclic number.

It is not a de Polignac number, because 77329823489 - 2²⁴ = 77313046273 is a prime.

It is a super-2 number, since 2×77329823489² (a number of 23 digits) contains 22 as substring.

Together with 77329823491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (77329823419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38664911744 + 38664911745.

It is an arithmetic number, because the mean of its divisors is an integer number (38664911745).

Almost surely, 2^77329823489 is an apocalyptic number.

It is an amenable number.

77329823489 is a deficient number, since it is larger than the sum of its proper divisors (1).

77329823489 is an equidigital number, since it uses as much as digits as its factorization.

77329823489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36578304, while the sum is 62.

The spelling of 77329823489 in words is "seventy-seven billion, three hundred twenty-nine million, eight hundred twenty-three thousand, four hundred eighty-nine".