51542143244 has 12 divisors (see below), whose sum is σ = 90320811000. Its totient is φ = 25736197248.

The previous prime is 51542143231. The next prime is 51542143267. The reversal of 51542143244 is 44234124515.

It is a happy number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 8715269 + ... + 8721180.

It is an arithmetic number, because the mean of its divisors is an integer number (7526734250).

Almost surely, 2^51542143244 is an apocalyptic number.

It is an amenable number.

51542143244 is a deficient number, since it is larger than the sum of its proper divisors (38778667756).

51542143244 is a wasteful number, since it uses less digits than its factorization.

51542143244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17437192 (or 17437190 counting only the distinct ones).

The product of its digits is 76800, while the sum is 35.

Adding to 51542143244 its reverse (44234124515), we get a palindrome (95776267759).

The spelling of 51542143244 in words is "fifty-one billion, five hundred forty-two million, one hundred forty-three thousand, two hundred forty-four".