78000111100001 has 8 divisors (see below), whose sum is σ = 78127271760384. Its totient is φ = 77873015175520.

The previous prime is 78000111099931. The next prime is 78000111100013. The reversal of 78000111100001 is 10000111100087.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78000111100001 is a prime.

It is a super-2 number, since 2×78000111100001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78000111109001) 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, 13771925 + ... + 18592098.

It is an arithmetic number, because the mean of its divisors is an integer number (9765908970048).

Almost surely, 2^{78000111100001} is an apocalyptic number.

It is an amenable number.

78000111100001 is a deficient number, since it is larger than the sum of its proper divisors (127160660383).

78000111100001 is a wasteful number, since it uses less digits than its factorization.

78000111100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32367951.

The product of its (nonzero) digits is 56, while the sum is 20.

Adding to 78000111100001 its reverse (10000111100087), we get a palindrome (88000222200088).

The spelling of 78000111100001 in words is "seventy-eight trillion, one hundred eleven million, one hundred thousand, one".