77777012039 has 2 divisors, whose sum is σ = 77777012040. Its totient is φ = 77777012038.

The previous prime is 77777012009. The next prime is 77777012111. The reversal of 77777012039 is 93021077777.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 77777012039 - 2³⁶ = 9057535303 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77777012009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38888506019 + 38888506020.

It is an arithmetic number, because the mean of its divisors is an integer number (38888506020).

Almost surely, 2^77777012039 is an apocalyptic number.

77777012039 is a deficient number, since it is larger than the sum of its proper divisors (1).

77777012039 is an equidigital number, since it uses as much as digits as its factorization.

77777012039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 907578, while the sum is 50.

The spelling of 77777012039 in words is "seventy-seven billion, seven hundred seventy-seven million, twelve thousand, thirty-nine".