6851378200577 has 2 divisors, whose sum is σ = 6851378200578. Its totient is φ = 6851378200576.

The previous prime is 6851378200543. The next prime is 6851378200657. The reversal of 6851378200577 is 7750028731586.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5002129063936 + 1849249136641 = 2236544^2 + 1359871^2 .

It is a cyclic number.

It is not a de Polignac number, because 6851378200577 - 2²⁰ = 6851377152001 is a prime.

It is not a weakly prime, because it can be changed into another prime (6851378200477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3425689100288 + 3425689100289.

It is an arithmetic number, because the mean of its divisors is an integer number (3425689100289).

Almost surely, 2^{6851378200577} is an apocalyptic number.

It is an amenable number.

6851378200577 is a deficient number, since it is larger than the sum of its proper divisors (1).

6851378200577 is an equidigital number, since it uses as much as digits as its factorization.

6851378200577 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19756800, while the sum is 59.

The spelling of 6851378200577 in words is "six trillion, eight hundred fifty-one billion, three hundred seventy-eight million, two hundred thousand, five hundred seventy-seven".