66436330032601 has 4 divisors (see below), whose sum is σ = 66458691641104. Its totient is φ = 66413968424100.

The previous prime is 66436330032563. The next prime is 66436330032619. The reversal of 66436330032601 is 10623003363466.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 66436330032601 - 2¹⁹ = 66436329508313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66436330042601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11180799795 + ... + 11180805736.

It is an arithmetic number, because the mean of its divisors is an integer number (16614672910276).

Almost surely, 2^{66436330032601} is an apocalyptic number.

It is an amenable number.

66436330032601 is a deficient number, since it is larger than the sum of its proper divisors (22361608503).

66436330032601 is a wasteful number, since it uses less digits than its factorization.

66436330032601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22361608502.

The product of its (nonzero) digits is 839808, while the sum is 43.

The spelling of 66436330032601 in words is "sixty-six trillion, four hundred thirty-six billion, three hundred thirty million, thirty-two thousand, six hundred one".