51841538399 has 16 divisors (see below), whose sum is σ = 62473939200. Its totient is φ = 42023867904.

The previous prime is 51841538393. The next prime is 51841538401. The reversal of 51841538399 is 99383514815.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 51841538399 - 2³² = 47546571103 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 (51841538393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 261029 + ... + 414510.

It is an arithmetic number, because the mean of its divisors is an integer number (3904621200).

Almost surely, 2^51841538399 is an apocalyptic number.

51841538399 is a deficient number, since it is larger than the sum of its proper divisors (10632400801).

51841538399 is a wasteful number, since it uses less digits than its factorization.

51841538399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 676142.

The product of its digits is 4665600, while the sum is 56.

The spelling of 51841538399 in words is "fifty-one billion, eight hundred forty-one million, five hundred thirty-eight thousand, three hundred ninety-nine".