66773070641 has 8 divisors (see below), whose sum is σ = 71134281120. Its totient is φ = 62496544032.

The previous prime is 66773070619. The next prime is 66773070647. The reversal of 66773070641 is 14607037766.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66773070641 - 2¹⁸ = 66772808497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66773070647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21169340 + ... + 21172493.

It is an arithmetic number, because the mean of its divisors is an integer number (8891785140).

Almost surely, 2^66773070641 is an apocalyptic number.

It is an amenable number.

66773070641 is a deficient number, since it is larger than the sum of its proper divisors (4361210479).

66773070641 is a wasteful number, since it uses less digits than its factorization.

66773070641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42341935.

The product of its (nonzero) digits is 889056, while the sum is 47.

The spelling of 66773070641 in words is "sixty-six billion, seven hundred seventy-three million, seventy thousand, six hundred forty-one".