65555101650 has 96 divisors (see below), whose sum is σ = 172511726400. Its totient is φ = 16417515520.

The previous prime is 65555101609. The next prime is 65555101687. The reversal of 65555101650 is 5610155556.

It is a junction number, because it is equal to n+sod(n) for n = 65555101599 and 65555101608.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1163326 + ... + 1218374.

It is an arithmetic number, because the mean of its divisors is an integer number (1796997150).

Almost surely, 2^65555101650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65555101650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86255863200).

65555101650 is an abundant number, since it is smaller than the sum of its proper divisors (106956624750).

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

65555101650 is a wasteful number, since it uses less digits than its factorization.

65555101650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55548 (or 55543 counting only the distinct ones).

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

The spelling of 65555101650 in words is "sixty-five billion, five hundred fifty-five million, one hundred one thousand, six hundred fifty".