66609663050 has 48 divisors (see below), whose sum is σ = 141733642752. Its totient is φ = 22814932800.

The previous prime is 66609663037. The next prime is 66609663101. The reversal of 66609663050 is 5036690666.

66609663050 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 = 66609662986 and 66609663004.

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, 260615 + ... + 448485.

It is an arithmetic number, because the mean of its divisors is an integer number (2952784224).

Almost surely, 2^66609663050 is an apocalyptic number.

66609663050 is an abundant number, since it is smaller than the sum of its proper divisors (75123979702).

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

66609663050 is a wasteful number, since it uses less digits than its factorization.

66609663050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188903 (or 188898 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 47.

The spelling of 66609663050 in words is "sixty-six billion, six hundred nine million, six hundred sixty-three thousand, fifty".