1066511516601 has 8 divisors (see below), whose sum is σ = 1429871794624. Its totient is φ = 707079458160.

The previous prime is 1066511516593. The next prime is 1066511516683. The reversal of 1066511516601 is 1066151156601.

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

It is not a de Polignac number, because 1066511516601 - 2³ = 1066511516593 is a prime.

It is a super-2 number, since 2×1066511516601² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1066511516601.

It is not an unprimeable number, because it can be changed into a prime (1066511556601) 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, 982054261 + ... + 982055346.

It is an arithmetic number, because the mean of its divisors is an integer number (178733974328).

Almost surely, 2^{1066511516601} is an apocalyptic number.

It is an amenable number.

1066511516601 is a deficient number, since it is larger than the sum of its proper divisors (363360278023).

1066511516601 is a wasteful number, since it uses less digits than its factorization.

1066511516601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1964109791.

The product of its (nonzero) digits is 32400, while the sum is 39.

The spelling of 1066511516601 in words is "one trillion, sixty-six billion, five hundred eleven million, five hundred sixteen thousand, six hundred one".