51085378896 has 40 divisors (see below), whose sum is σ = 139733538624. Its totient is φ = 16026785280.

The previous prime is 51085378873. The next prime is 51085378921. The reversal of 51085378896 is 69887358015.

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, 31301500 + ... + 31303131.

Almost surely, 2^51085378896 is an apocalyptic number.

It is an amenable number.

51085378896 is an abundant number, since it is smaller than the sum of its proper divisors (88648159728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51085378896 is a wasteful number, since it uses less digits than its factorization.

51085378896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62604659 (or 62604653 counting only the distinct ones).

The product of its (nonzero) digits is 14515200, while the sum is 60.

The spelling of 51085378896 in words is "fifty-one billion, eighty-five million, three hundred seventy-eight thousand, eight hundred ninety-six".