778217009842241 has 8 divisors (see below), whose sum is σ = 780203261908224. Its totient is φ = 776232644955040.

The previous prime is 778217009842231. The next prime is 778217009842253. The reversal of 778217009842241 is 142248900712877.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 778217009842241 - 2⁴² = 773818963331137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (778217009842211) 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 in 7 ways as a sum of consecutive naturals, for example, 470968901 + ... + 472618386.

It is an arithmetic number, because the mean of its divisors is an integer number (97525407738528).

Almost surely, 2^{778217009842241} is an apocalyptic number.

It is an amenable number.

778217009842241 is a deficient number, since it is larger than the sum of its proper divisors (1986252065983).

778217009842241 is a wasteful number, since it uses less digits than its factorization.

778217009842241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943589391.

The product of its (nonzero) digits is 25288704, while the sum is 62.

The spelling of 778217009842241 in words is "seven hundred seventy-eight trillion, two hundred seventeen billion, nine million, eight hundred forty-two thousand, two hundred forty-one".