66506104200 has 96 divisors (see below), whose sum is σ = 212819592960. Its totient is φ = 17162860800.

The previous prime is 66506104139. The next prime is 66506104211. The reversal of 66506104200 is 240160566.

66506104200 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×66506104200² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 1769199 + ... + 1806398.

It is an arithmetic number, because the mean of its divisors is an integer number (2216870760).

Almost surely, 2^66506104200 is an apocalyptic number.

66506104200 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

66506104200 is an abundant number, since it is smaller than the sum of its proper divisors (146313488760).

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

66506104200 is a wasteful number, since it uses less digits than its factorization.

66506104200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3575647 (or 3575638 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 66506104200 its reverse (240160566), we get a palindrome (66746264766).

The spelling of 66506104200 in words is "sixty-six billion, five hundred six million, one hundred four thousand, two hundred".