66936556736411 has 16 divisors (see below), whose sum is σ = 68541129514368. Its totient is φ = 65345273510400.

The previous prime is 66936556736393. The next prime is 66936556736417. The reversal of 66936556736411 is 11463765563966.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66936556736411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66936556736417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7868255 + ... + 13992231.

It is an arithmetic number, because the mean of its divisors is an integer number (4283820594648).

Almost surely, 2^{66936556736411} is an apocalyptic number.

66936556736411 is a deficient number, since it is larger than the sum of its proper divisors (1604572777957).

66936556736411 is a wasteful number, since it uses less digits than its factorization.

66936556736411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6125062.

The product of its digits is 440899200, while the sum is 68.

The spelling of 66936556736411 in words is "sixty-six trillion, nine hundred thirty-six billion, five hundred fifty-six million, seven hundred thirty-six thousand, four hundred eleven".