6978477601 has 2 divisors, whose sum is σ = 6978477602. Its totient is φ = 6978477600.

The previous prime is 6978477599. The next prime is 6978477659. The reversal of 6978477601 is 1067748796.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4313336976 + 2665140625 = 65676^2 + 51625^2 .

It is a cyclic number.

It is not a de Polignac number, because 6978477601 - 2¹ = 6978477599 is a prime.

Together with 6978477599, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (6978477691) 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, 3489238800 + 3489238801.

It is an arithmetic number, because the mean of its divisors is an integer number (3489238801).

Almost surely, 2^6978477601 is an apocalyptic number.

It is an amenable number.

6978477601 is a deficient number, since it is larger than the sum of its proper divisors (1).

6978477601 is an equidigital number, since it uses as much as digits as its factorization.

6978477601 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3556224, while the sum is 55.

The square root of 6978477601 is about 83537.2827006002. The cubic root of 6978477601 is about 1910.9686525134.

The spelling of 6978477601 in words is "six billion, nine hundred seventy-eight million, four hundred seventy-seven thousand, six hundred one".