7066172601721 has 8 divisors (see below), whose sum is σ = 7373817362880. Its totient is φ = 6758562829392.

The previous prime is 7066172601673. The next prime is 7066172601809. The reversal of 7066172601721 is 1271062716607.

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 7066172601721 - 2⁹ = 7066172601209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7066172641721) 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, 8334090 + ... + 9142723.

It is an arithmetic number, because the mean of its divisors is an integer number (921727170360).

Almost surely, 2^{7066172601721} is an apocalyptic number.

It is an amenable number.

7066172601721 is a deficient number, since it is larger than the sum of its proper divisors (307644761159).

7066172601721 is a wasteful number, since it uses less digits than its factorization.

7066172601721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17494415.

The product of its (nonzero) digits is 296352, while the sum is 46.

The spelling of 7066172601721 in words is "seven trillion, sixty-six billion, one hundred seventy-two million, six hundred one thousand, seven hundred twenty-one".