87767276771 has 2 divisors, whose sum is σ = 87767276772. Its totient is φ = 87767276770.

The previous prime is 87767276759. The next prime is 87767276789. The reversal of 87767276771 is 17767276778.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 87767276771 - 2¹⁰ = 87767275747 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87767276698 and 87767276707.

It is not a weakly prime, because it can be changed into another prime (87767276741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43883638385 + 43883638386.

It is an arithmetic number, because the mean of its divisors is an integer number (43883638386).

Almost surely, 2^87767276771 is an apocalyptic number.

87767276771 is a deficient number, since it is larger than the sum of its proper divisors (1).

87767276771 is an equidigital number, since it uses as much as digits as its factorization.

87767276771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 67765824, while the sum is 65.

The spelling of 87767276771 in words is "eighty-seven billion, seven hundred sixty-seven million, two hundred seventy-six thousand, seven hundred seventy-one".