66100506583 has 2 divisors, whose sum is σ = 66100506584. Its totient is φ = 66100506582.

The previous prime is 66100506559. The next prime is 66100506611. The reversal of 66100506583 is 38560500166.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66100506583 - 2²¹ = 66098409431 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66100506533) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33050253291 + 33050253292.

It is an arithmetic number, because the mean of its divisors is an integer number (33050253292).

Almost surely, 2^66100506583 is an apocalyptic number.

66100506583 is a deficient number, since it is larger than the sum of its proper divisors (1).

66100506583 is an equidigital number, since it uses as much as digits as its factorization.

66100506583 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 66100506583 in words is "sixty-six billion, one hundred million, five hundred six thousand, five hundred eighty-three".