66411640560603 has 32 divisors (see below), whose sum is σ = 97391117601792. Its totient is φ = 39998386771200.

The previous prime is 66411640560581. The next prime is 66411640560641. The reversal of 66411640560603 is 30606504611466.

It is not a de Polignac number, because 66411640560603 - 2⁵ = 66411640560571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66411640560103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 103576668 + ... + 104215878.

It is an arithmetic number, because the mean of its divisors is an integer number (3043472425056).

Almost surely, 2^{66411640560603} is an apocalyptic number.

66411640560603 is a deficient number, since it is larger than the sum of its proper divisors (30979477041189).

66411640560603 is a wasteful number, since it uses less digits than its factorization.

66411640560603 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695955.

The product of its (nonzero) digits is 1866240, while the sum is 48.

The spelling of 66411640560603 in words is "sixty-six trillion, four hundred eleven billion, six hundred forty million, five hundred sixty thousand, six hundred three".