77135744099 has 2 divisors, whose sum is σ = 77135744100. Its totient is φ = 77135744098.

The previous prime is 77135744083. The next prime is 77135744113. The reversal of 77135744099 is 99044753177.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77135744099 - 2⁴ = 77135744083 is a prime.

It is not a weakly prime, because it can be changed into another prime (77135744009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38567872049 + 38567872050.

It is an arithmetic number, because the mean of its divisors is an integer number (38567872050).

Almost surely, 2^77135744099 is an apocalyptic number.

77135744099 is a deficient number, since it is larger than the sum of its proper divisors (1).

77135744099 is an equidigital number, since it uses as much as digits as its factorization.

77135744099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6667920, while the sum is 56.

The spelling of 77135744099 in words is "seventy-seven billion, one hundred thirty-five million, seven hundred forty-four thousand, ninety-nine".