66020828226860 has 24 divisors (see below), whose sum is σ = 149308642298256. Its totient is φ = 24376921191360.

The previous prime is 66020828226851. The next prime is 66020828226883. The reversal of 66020828226860 is 6862282802066.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 66020828226796 and 66020828226805.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126963130946 + ... + 126963131465.

It is an arithmetic number, because the mean of its divisors is an integer number (6221193429094).

Almost surely, 2^{66020828226860} is an apocalyptic number.

It is an amenable number.

66020828226860 is an abundant number, since it is smaller than the sum of its proper divisors (83287814071396).

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

66020828226860 is a wasteful number, since it uses less digits than its factorization.

66020828226860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253926262433 (or 253926262431 counting only the distinct ones).

The product of its (nonzero) digits is 10616832, while the sum is 56.

The spelling of 66020828226860 in words is "sixty-six trillion, twenty billion, eight hundred twenty-eight million, two hundred twenty-six thousand, eight hundred sixty".