77128069242119 has 8 divisors (see below), whose sum is σ = 89945270253600. Its totient is φ = 66109773635808.

The previous prime is 77128069242083. The next prime is 77128069242131. The reversal of 77128069242119 is 91124296082177.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-77128069242119 is a prime.

It is a super-2 number, since 2×77128069242119² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77128069242139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112431587474 + ... + 112431588159.

It is an arithmetic number, because the mean of its divisors is an integer number (11243158781700).

Almost surely, 2^{77128069242119} is an apocalyptic number.

77128069242119 is a deficient number, since it is larger than the sum of its proper divisors (12817201011481).

77128069242119 is an equidigital number, since it uses as much as digits as its factorization.

77128069242119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224863175654 (or 224863175640 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 59.

The spelling of 77128069242119 in words is "seventy-seven trillion, one hundred twenty-eight billion, sixty-nine million, two hundred forty-two thousand, one hundred nineteen".