66066556050 has 72 divisors (see below), whose sum is σ = 193635084240. Its totient is φ = 16016133600.

The previous prime is 66066556013. The next prime is 66066556069. The reversal of 66066556050 is 5065566066.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a junction number, because it is equal to n+sod(n) for n = 66066555987 and 66066556005.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 6668440 + ... + 6678339.

It is an arithmetic number, because the mean of its divisors is an integer number (2689376170).

Almost surely, 2^66066556050 is an apocalyptic number.

66066556050 is an abundant number, since it is smaller than the sum of its proper divisors (127568528190).

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

66066556050 is a wasteful number, since it uses less digits than its factorization.

66066556050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13346808 (or 13346800 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 45.

It can be divided in two parts, 6606 and 6556050, that added together give a palindrome (6562656).

The spelling of 66066556050 in words is "sixty-six billion, sixty-six million, five hundred fifty-six thousand, fifty".