77555511907 has 2 divisors, whose sum is σ = 77555511908. Its totient is φ = 77555511906.

The previous prime is 77555511833. The next prime is 77555511919. The reversal of 77555511907 is 70911555577.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77555511907 - 2¹⁹ = 77554987619 is a prime.

It is not a weakly prime, because it can be changed into another prime (77555511937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38777755953 + 38777755954.

It is an arithmetic number, because the mean of its divisors is an integer number (38777755954).

Almost surely, 2^77555511907 is an apocalyptic number.

77555511907 is a deficient number, since it is larger than the sum of its proper divisors (1).

77555511907 is an equidigital number, since it uses as much as digits as its factorization.

77555511907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1929375, while the sum is 52.

The spelling of 77555511907 in words is "seventy-seven billion, five hundred fifty-five million, five hundred eleven thousand, nine hundred seven".