77359725869 has 2 divisors, whose sum is σ = 77359725870. Its totient is φ = 77359725868.

The previous prime is 77359725827. The next prime is 77359725871. The reversal of 77359725869 is 96852795377.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74589072100 + 2770653769 = 273110^2 + 52637^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-77359725869 is a prime.

It is a super-2 number, since 2×77359725869² (a number of 23 digits) contains 22 as substring.

Together with 77359725871, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 77359725799 and 77359725808.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77359725809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38679862934 + 38679862935.

It is an arithmetic number, because the mean of its divisors is an integer number (38679862935).

Almost surely, 2^77359725869 is an apocalyptic number.

It is an amenable number.

77359725869 is a deficient number, since it is larger than the sum of its proper divisors (1).

77359725869 is an equidigital number, since it uses as much as digits as its factorization.

77359725869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 200037600, while the sum is 68.

The spelling of 77359725869 in words is "seventy-seven billion, three hundred fifty-nine million, seven hundred twenty-five thousand, eight hundred sixty-nine".