51758612018 has 8 divisors (see below), whose sum is σ = 77639669100. Its totient is φ = 25878722320.

The previous prime is 51758611991. The next prime is 51758612021. The reversal of 51758612018 is 81021685715.

It can be written as a sum of positive squares in 2 ways, for example, as 49634047369 + 2124564649 = 222787^2 + 46093^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 51758612018.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170993 + ... + 364356.

Almost surely, 2^51758612018 is an apocalyptic number.

51758612018 is a deficient number, since it is larger than the sum of its proper divisors (25881057082).

51758612018 is a wasteful number, since it uses less digits than its factorization.

51758612018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 583692.

The product of its (nonzero) digits is 134400, while the sum is 44.

The spelling of 51758612018 in words is "fifty-one billion, seven hundred fifty-eight million, six hundred twelve thousand, eighteen".