51959399433 has 16 divisors (see below), whose sum is σ = 70920038400. Its totient is φ = 33826957200.

The previous prime is 51959399419. The next prime is 51959399483. The reversal of 51959399433 is 33499395915.

It is not a de Polignac number, because 51959399433 - 2⁹ = 51959398921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51959399483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 945313 + ... + 998766.

It is an arithmetic number, because the mean of its divisors is an integer number (4432502400).

Almost surely, 2^51959399433 is an apocalyptic number.

It is an amenable number.

51959399433 is a deficient number, since it is larger than the sum of its proper divisors (18960638967).

51959399433 is a wasteful number, since it uses less digits than its factorization.

51959399433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1944292.

The product of its digits is 17714700, while the sum is 60.

The spelling of 51959399433 in words is "fifty-one billion, nine hundred fifty-nine million, three hundred ninety-nine thousand, four hundred thirty-three".