51435422511 has 16 divisors (see below), whose sum is σ = 77394994560. Its totient is φ = 30098052320.

The previous prime is 51435422473. The next prime is 51435422527. The reversal of 51435422511 is 11522453415.

It is a cyclic number.

It is not a de Polignac number, because 51435422511 - 2¹⁰ = 51435421487 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51435422561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26872305 + ... + 26874218.

It is an arithmetic number, because the mean of its divisors is an integer number (4837187160).

Almost surely, 2^51435422511 is an apocalyptic number.

51435422511 is a deficient number, since it is larger than the sum of its proper divisors (25959572049).

51435422511 is a wasteful number, since it uses less digits than its factorization.

51435422511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53746566.

The product of its digits is 24000, while the sum is 33.

Adding to 51435422511 its reverse (11522453415), we get a palindrome (62957875926).

The spelling of 51435422511 in words is "fifty-one billion, four hundred thirty-five million, four hundred twenty-two thousand, five hundred eleven".