66203290000 has 225 divisors, whose sum is σ = 167641539879. Its totient is φ = 25318320000.

The previous prime is 66203289979. The next prime is 66203290003. The reversal of 66203290000 is 9230266.

The square root of 66203290000 is 257300.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 5190337936 + 61012952064 = 72044^2 + 247008^2 .

It is not an unprimeable number, because it can be changed into a prime (66203290003) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 797629959 + ... + 797630041.

Almost surely, 2^66203290000 is an apocalyptic number.

66203290000 is the 257300-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66203290000

66203290000 is an abundant number, since it is smaller than the sum of its proper divisors (101438249879).

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

66203290000 is an frugal number, since it uses more digits than its factorization.

66203290000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 66203290000 in words is "sixty-six billion, two hundred three million, two hundred ninety thousand".