51423252311 has 4 divisors (see below), whose sum is σ = 51540390000. Its totient is φ = 51306114624.

The previous prime is 51423252253. The next prime is 51423252367. The reversal of 51423252311 is 11325232415.

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 51423252311 - 2³⁴ = 34243383127 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 (51423252911) 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, 58568186 + ... + 58569063.

It is an arithmetic number, because the mean of its divisors is an integer number (12885097500).

Almost surely, 2^51423252311 is an apocalyptic number.

51423252311 is a deficient number, since it is larger than the sum of its proper divisors (117137689).

51423252311 is a wasteful number, since it uses less digits than its factorization.

51423252311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117137688.

The product of its digits is 7200, while the sum is 29.

Adding to 51423252311 its reverse (11325232415), we get a palindrome (62748484726).

The spelling of 51423252311 in words is "fifty-one billion, four hundred twenty-three million, two hundred fifty-two thousand, three hundred eleven".