66354200001 has 32 divisors (see below), whose sum is σ = 99578505600. Its totient is φ = 43663656960.

The previous prime is 66354199979. The next prime is 66354200111. The reversal of 66354200001 is 10000245366.

66354200001 is a `hidden beast` number, since 6 + 635 + 4 + 20 + 0 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 66354200001 - 2⁹ = 66354199489 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (66354207001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1387041 + ... + 1434081.

It is an arithmetic number, because the mean of its divisors is an integer number (3111828300).

Almost surely, 2^66354200001 is an apocalyptic number.

It is an amenable number.

66354200001 is a deficient number, since it is larger than the sum of its proper divisors (33224305599).

66354200001 is a wasteful number, since it uses less digits than its factorization.

66354200001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47726 (or 47720 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 66354200001 its reverse (10000245366), we get a palindrome (76354445367).

The spelling of 66354200001 in words is "sixty-six billion, three hundred fifty-four million, two hundred thousand, one".