51818262085 has 8 divisors (see below), whose sum is σ = 62300812320. Its totient is φ = 41375344464.

The previous prime is 51818262017. The next prime is 51818262101. The reversal of 51818262085 is 58026281815.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51818262085 is a prime.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 9905275 + ... + 9910504.

It is an arithmetic number, because the mean of its divisors is an integer number (7787601540).

Almost surely, 2^51818262085 is an apocalyptic number.

It is an amenable number.

51818262085 is a deficient number, since it is larger than the sum of its proper divisors (10482550235).

51818262085 is a wasteful number, since it uses less digits than its factorization.

51818262085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19816307.

The product of its (nonzero) digits is 307200, while the sum is 46.

The spelling of 51818262085 in words is "fifty-one billion, eight hundred eighteen million, two hundred sixty-two thousand, eighty-five".