66757040043 has 4 divisors (see below), whose sum is σ = 89009386728. Its totient is φ = 44504693360.

The previous prime is 66757040041. The next prime is 66757040101. The reversal of 66757040043 is 34004075766.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66757040043 - 2¹ = 66757040041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66757039977 and 66757040004.

It is not an unprimeable number, because it can be changed into a prime (66757040041) 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, 11126173338 + ... + 11126173343.

It is an arithmetic number, because the mean of its divisors is an integer number (22252346682).

Almost surely, 2^66757040043 is an apocalyptic number.

66757040043 is a deficient number, since it is larger than the sum of its proper divisors (22252346685).

66757040043 is a wasteful number, since it uses less digits than its factorization.

66757040043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22252346684.

The product of its (nonzero) digits is 423360, while the sum is 42.

The spelling of 66757040043 in words is "sixty-six billion, seven hundred fifty-seven million, forty thousand, forty-three".