51655022011 has 8 divisors (see below), whose sum is σ = 54375897600. Its totient is φ = 48934365480.

The previous prime is 51655021969. The next prime is 51655022033. The reversal of 51655022011 is 11022055615.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51655022011 - 2¹³ = 51655013819 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51655022071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 687006 + ... + 758476.

It is an arithmetic number, because the mean of its divisors is an integer number (6796987200).

Almost surely, 2^51655022011 is an apocalyptic number.

51655022011 is a deficient number, since it is larger than the sum of its proper divisors (2720875589).

51655022011 is a wasteful number, since it uses less digits than its factorization.

51655022011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109529.

The product of its (nonzero) digits is 3000, while the sum is 28.

Adding to 51655022011 its reverse (11022055615), we get a palindrome (62677077626).

The spelling of 51655022011 in words is "fifty-one billion, six hundred fifty-five million, twenty-two thousand, eleven".