51085733990 has 8 divisors (see below), whose sum is σ = 91954321200. Its totient is φ = 20434293592.

The previous prime is 51085733983. The next prime is 51085734023. The reversal of 51085733990 is 9933758015.

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

It is a congruent number.

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, 2554286690 + ... + 2554286709.

It is an arithmetic number, because the mean of its divisors is an integer number (11494290150).

Almost surely, 2^51085733990 is an apocalyptic number.

51085733990 is a deficient number, since it is larger than the sum of its proper divisors (40868587210).

51085733990 is a wasteful number, since it uses less digits than its factorization.

51085733990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5108573406.

The product of its (nonzero) digits is 1020600, while the sum is 50.

The spelling of 51085733990 in words is "fifty-one billion, eighty-five million, seven hundred thirty-three thousand, nine hundred ninety".