77740637011 has 2 divisors, whose sum is σ = 77740637012. Its totient is φ = 77740637010.

The previous prime is 77740636969. The next prime is 77740637021. The reversal of 77740637011 is 11073604777.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77740637011 - 2²⁷ = 77606419283 is a prime.

It is not a weakly prime, because it can be changed into another prime (77740637021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38870318505 + 38870318506.

It is an arithmetic number, because the mean of its divisors is an integer number (38870318506).

Almost surely, 2^77740637011 is an apocalyptic number.

77740637011 is a deficient number, since it is larger than the sum of its proper divisors (1).

77740637011 is an equidigital number, since it uses as much as digits as its factorization.

77740637011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 172872, while the sum is 43.

The spelling of 77740637011 in words is "seventy-seven billion, seven hundred forty million, six hundred thirty-seven thousand, eleven".