51055561650 has 24 divisors (see below), whose sum is σ = 126617793264. Its totient is φ = 13614816400.

The previous prime is 51055561633. The next prime is 51055561673. The reversal of 51055561650 is 5616555015.

51055561650 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 51055561599 and 51055561608.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170185056 + ... + 170185355.

It is an arithmetic number, because the mean of its divisors is an integer number (5275741386).

Almost surely, 2^51055561650 is an apocalyptic number.

51055561650 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

51055561650 is an abundant number, since it is smaller than the sum of its proper divisors (75562231614).

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

51055561650 is a wasteful number, since it uses less digits than its factorization.

51055561650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 340370426 (or 340370421 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 39.

The spelling of 51055561650 in words is "fifty-one billion, fifty-five million, five hundred sixty-one thousand, six hundred fifty".