51113550242 has 8 divisors (see below), whose sum is σ = 81180344556. Its totient is φ = 24053435392.

The previous prime is 51113550139. The next prime is 51113550317. The reversal of 51113550242 is 24205531115.

It can be written as a sum of positive squares in 2 ways, for example, as 44007228841 + 7106321401 = 209779^2 + 84299^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×51113550242² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 751669823 + ... + 751669890.

Almost surely, 2^51113550242 is an apocalyptic number.

51113550242 is a deficient number, since it is larger than the sum of its proper divisors (30066794314).

51113550242 is a wasteful number, since it uses less digits than its factorization.

51113550242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503339732.

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 51113550242 in words is "fifty-one billion, one hundred thirteen million, five hundred fifty thousand, two hundred forty-two".