51782107111 has 4 divisors (see below), whose sum is σ = 59179550992. Its totient is φ = 44384663232.

The previous prime is 51782107079. The next prime is 51782107123. The reversal of 51782107111 is 11170128715.

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

It is not a de Polignac number, because 51782107111 - 2⁵ = 51782107079 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 (51782107211) 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, 3698721930 + ... + 3698721943.

It is an arithmetic number, because the mean of its divisors is an integer number (14794887748).

Almost surely, 2^51782107111 is an apocalyptic number.

51782107111 is a deficient number, since it is larger than the sum of its proper divisors (7397443881).

51782107111 is an equidigital number, since it uses as much as digits as its factorization.

51782107111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7397443880.

The product of its (nonzero) digits is 3920, while the sum is 34.

The spelling of 51782107111 in words is "fifty-one billion, seven hundred eighty-two million, one hundred seven thousand, one hundred eleven".