51041210111 has 4 divisors (see below), whose sum is σ = 51043987152. Its totient is φ = 51038433072.

The previous prime is 51041210053. The next prime is 51041210113. The reversal of 51041210111 is 11101214015.

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 51041210111 - 2²⁶ = 50974101247 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51041210111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51041210113) 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, 1360766 + ... + 1397771.

It is an arithmetic number, because the mean of its divisors is an integer number (12760996788).

Almost surely, 2^51041210111 is an apocalyptic number.

51041210111 is a deficient number, since it is larger than the sum of its proper divisors (2777041).

51041210111 is a wasteful number, since it uses less digits than its factorization.

51041210111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2777040.

The product of its (nonzero) digits is 40, while the sum is 17.

Adding to 51041210111 its reverse (11101214015), we get a palindrome (62142424126).

The spelling of 51041210111 in words is "fifty-one billion, forty-one million, two hundred ten thousand, one hundred eleven".