51550434355 has 32 divisors (see below), whose sum is σ = 71430524928. Its totient is φ = 34984224000.

The previous prime is 51550434349. The next prime is 51550434379. The reversal of 51550434355 is 55343405515.

It is a happy number.

It is not a de Polignac number, because 51550434355 - 2¹⁵ = 51550401587 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1414239 + ... + 1450231.

It is an arithmetic number, because the mean of its divisors is an integer number (2232203904).

Almost surely, 2^51550434355 is an apocalyptic number.

51550434355 is a deficient number, since it is larger than the sum of its proper divisors (19880090573).

51550434355 is a wasteful number, since it uses less digits than its factorization.

51550434355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36427.

The product of its (nonzero) digits is 450000, while the sum is 40.

The spelling of 51550434355 in words is "fifty-one billion, five hundred fifty million, four hundred thirty-four thousand, three hundred fifty-five".