51333424341991 has 16 divisors (see below), whose sum is σ = 56136976411680. Its totient is φ = 46552799969280.

The previous prime is 51333424341977. The next prime is 51333424342003. The reversal of 51333424341991 is 19914342433315.

It is not a de Polignac number, because 51333424341991 - 2¹⁹ = 51333423817703 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 (51333424341931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6072865 + ... + 11812981.

It is an arithmetic number, because the mean of its divisors is an integer number (3508561025730).

Almost surely, 2^{51333424341991} is an apocalyptic number.

51333424341991 is a deficient number, since it is larger than the sum of its proper divisors (4803552069689).

51333424341991 is a wasteful number, since it uses less digits than its factorization.

51333424341991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5742114.

The product of its digits is 4199040, while the sum is 52.

The spelling of 51333424341991 in words is "fifty-one trillion, three hundred thirty-three billion, four hundred twenty-four million, three hundred forty-one thousand, nine hundred ninety-one".