51534019338 has 32 divisors (see below), whose sum is σ = 105480646656. Its totient is φ = 16776024048.

The previous prime is 51534019331. The next prime is 51534019349. The reversal of 51534019338 is 83391043515.

It is a self number, because there is not a number n which added to its sum of digits gives 51534019338.

It is not an unprimeable number, because it can be changed into a prime (51534019331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2648481 + ... + 2667867.

It is an arithmetic number, because the mean of its divisors is an integer number (3296270208).

Almost surely, 2^51534019338 is an apocalyptic number.

51534019338 is an abundant number, since it is smaller than the sum of its proper divisors (53946627318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51534019338 is a wasteful number, since it uses less digits than its factorization.

51534019338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29738.

The product of its (nonzero) digits is 194400, while the sum is 42.

The spelling of 51534019338 in words is "fifty-one billion, five hundred thirty-four million, nineteen thousand, three hundred thirty-eight".