1066005561651 has 8 divisors (see below), whose sum is σ = 1421412464784. Its totient is φ = 710634516480.

The previous prime is 1066005561637. The next prime is 1066005561683. The reversal of 1066005561651 is 1561655006601.

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

It is not a de Polignac number, because 1066005561651 - 2¹⁸ = 1066005299507 is a prime.

It is a super-2 number, since 2×1066005561651² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066005551651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8895046 + ... + 9014091.

It is an arithmetic number, because the mean of its divisors is an integer number (177676558098).

Almost surely, 2^{1066005561651} is an apocalyptic number.

1066005561651 is a deficient number, since it is larger than the sum of its proper divisors (355406903133).

1066005561651 is a wasteful number, since it uses less digits than its factorization.

1066005561651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17928981.

The product of its (nonzero) digits is 162000, while the sum is 42.

The spelling of 1066005561651 in words is "one trillion, sixty-six billion, five million, five hundred sixty-one thousand, six hundred fifty-one".