4001780776087 has 2 divisors, whose sum is σ = 4001780776088. Its totient is φ = 4001780776086.

The previous prime is 4001780776039. The next prime is 4001780776099. The reversal of 4001780776087 is 7806770871004.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4001780776087 - 2⁷ = 4001780775959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4001780776687) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2000890388043 + 2000890388044.

It is an arithmetic number, because the mean of its divisors is an integer number (2000890388044).

Almost surely, 2^{4001780776087} is an apocalyptic number.

4001780776087 is a deficient number, since it is larger than the sum of its proper divisors (1).

4001780776087 is an equidigital number, since it uses as much as digits as its factorization.

4001780776087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3687936, while the sum is 55.

The spelling of 4001780776087 in words is "four trillion, one billion, seven hundred eighty million, seven hundred seventy-six thousand, eighty-seven".