778011100001 has 16 divisors (see below), whose sum is σ = 794546108928. Its totient is φ = 761546448000.

The previous prime is 778011099997. The next prime is 778011100039. The reversal of 778011100001 is 100001110877.

It is a cyclic number.

It is not a de Polignac number, because 778011100001 - 2² = 778011099997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (778011600001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59036525 + ... + 59049701.

It is an arithmetic number, because the mean of its divisors is an integer number (49659131808).

Almost surely, 2^778011100001 is an apocalyptic number.

It is an amenable number.

778011100001 is a deficient number, since it is larger than the sum of its proper divisors (16535008927).

778011100001 is a wasteful number, since it uses less digits than its factorization.

778011100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15752.

The product of its (nonzero) digits is 392, while the sum is 26.

Adding to 778011100001 its reverse (100001110877), we get a palindrome (878012210878).

The spelling of 778011100001 in words is "seven hundred seventy-eight billion, eleven million, one hundred thousand, one".