7802011112111 has 4 divisors (see below), whose sum is σ = 7805321259192. Its totient is φ = 7798700965032.

The previous prime is 7802011112107. The next prime is 7802011112131. The reversal of 7802011112111 is 1112111102087.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 7802011112111 - 2² = 7802011112107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7802011112131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1655070005 + ... + 1655074718.

It is an arithmetic number, because the mean of its divisors is an integer number (1951330314798).

Almost surely, 2^{7802011112111} is an apocalyptic number.

7802011112111 is a deficient number, since it is larger than the sum of its proper divisors (3310147081).

7802011112111 is a wasteful number, since it uses less digits than its factorization.

7802011112111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3310147080.

The product of its (nonzero) digits is 224, while the sum is 26.

Adding to 7802011112111 its reverse (1112111102087), we get a palindrome (8914122214198).

The spelling of 7802011112111 in words is "seven trillion, eight hundred two billion, eleven million, one hundred twelve thousand, one hundred eleven".