51533971383 has 16 divisors (see below), whose sum is σ = 69926211936. Its totient is φ = 33750272640.

The previous prime is 51533971283. The next prime is 51533971397. The reversal of 51533971383 is 38317933515.

It is not a de Polignac number, because 51533971383 - 2¹³ = 51533963191 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51533971283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30816 + ... + 322517.

It is an arithmetic number, because the mean of its divisors is an integer number (4370388246).

Almost surely, 2^51533971383 is an apocalyptic number.

51533971383 is a deficient number, since it is larger than the sum of its proper divisors (18392240553).

51533971383 is a wasteful number, since it uses less digits than its factorization.

51533971383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354194.

The product of its digits is 1020600, while the sum is 48.

The spelling of 51533971383 in words is "fifty-one billion, five hundred thirty-three million, nine hundred seventy-one thousand, three hundred eighty-three".