77777693011 has 2 divisors, whose sum is σ = 77777693012. Its totient is φ = 77777693010.

The previous prime is 77777693003. The next prime is 77777693017. The reversal of 77777693011 is 11039677777.

It is a strong prime.

It is an emirp because it is prime and its reverse (11039677777) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 77777693011 - 2³ = 77777693003 is a prime.

It is a super-2 number, since 2×77777693011² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (77777693017) 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, 38888846505 + 38888846506.

It is an arithmetic number, because the mean of its divisors is an integer number (38888846506).

Almost surely, 2^77777693011 is an apocalyptic number.

77777693011 is a deficient number, since it is larger than the sum of its proper divisors (1).

77777693011 is an equidigital number, since it uses as much as digits as its factorization.

77777693011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2722734, while the sum is 55.

The spelling of 77777693011 in words is "seventy-seven billion, seven hundred seventy-seven million, six hundred ninety-three thousand, eleven".