66539094783 has 32 divisors (see below), whose sum is σ = 112024912896. Its totient is φ = 34229826048.

The previous prime is 66539094767. The next prime is 66539094823. The reversal of 66539094783 is 38749093566.

It is not a de Polignac number, because 66539094783 - 2⁴ = 66539094767 is a prime.

It is a super-2 number, since 2×66539094783² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66539094683) 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, 4043616 + ... + 4060037.

It is an arithmetic number, because the mean of its divisors is an integer number (3500778528).

Almost surely, 2^66539094783 is an apocalyptic number.

66539094783 is a deficient number, since it is larger than the sum of its proper divisors (45485818113).

66539094783 is a wasteful number, since it uses less digits than its factorization.

66539094783 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8103703.

The product of its (nonzero) digits is 29393280, while the sum is 60.

The spelling of 66539094783 in words is "sixty-six billion, five hundred thirty-nine million, ninety-four thousand, seven hundred eighty-three".