51419688650 has 48 divisors (see below), whose sum is σ = 104595859008. Its totient is φ = 18651360000.

The previous prime is 51419688631. The next prime is 51419688701. The reversal of 51419688650 is 5688691415.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51419688592 and 51419688601.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 103979 + ... + 337121.

It is an arithmetic number, because the mean of its divisors is an integer number (2179080396).

Almost surely, 2^51419688650 is an apocalyptic number.

51419688650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51419688650 is an abundant number, since it is smaller than the sum of its proper divisors (53176170358).

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

51419688650 is a wasteful number, since it uses less digits than its factorization.

51419688650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233567 (or 233562 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 53.

The spelling of 51419688650 in words is "fifty-one billion, four hundred nineteen million, six hundred eighty-eight thousand, six hundred fifty".