4778518069601 has 2 divisors, whose sum is σ = 4778518069602. Its totient is φ = 4778518069600.

The previous prime is 4778518069537. The next prime is 4778518069603. The reversal of 4778518069601 is 1069608158774.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4350357234001 + 428160835600 = 2085751^2 + 654340^2 .

It is a cyclic number.

It is not a de Polignac number, because 4778518069601 - 2⁶ = 4778518069537 is a prime.

Together with 4778518069603, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4778518069603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2389259034800 + 2389259034801.

It is an arithmetic number, because the mean of its divisors is an integer number (2389259034801).

Almost surely, 2^{4778518069601} is an apocalyptic number.

It is an amenable number.

4778518069601 is a deficient number, since it is larger than the sum of its proper divisors (1).

4778518069601 is an equidigital number, since it uses as much as digits as its factorization.

4778518069601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20321280, while the sum is 62.

The spelling of 4778518069601 in words is "four trillion, seven hundred seventy-eight billion, five hundred eighteen million, sixty-nine thousand, six hundred one".