1066166016651 has 24 divisors (see below), whose sum is σ = 1572866178624. Its totient is φ = 695618035200.

The previous prime is 1066166016613. The next prime is 1066166016659. The reversal of 1066166016651 is 1566106616601.

1066166016651 is a `hidden beast` number, since 10 + 6 + 616 + 6 + 0 + 16 + 6 + 5 + 1 = 666.

It is not a de Polignac number, because 1066166016651 - 2⁷ = 1066166016523 is a prime.

It is a super-2 number, since 2×1066166016651² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1066166016597 and 1066166016606.

It is not an unprimeable number, because it can be changed into a prime (1066166016659) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9759705 + ... + 9868341.

It is an arithmetic number, because the mean of its divisors is an integer number (65536090776).

Almost surely, 2^{1066166016651} is an apocalyptic number.

1066166016651 is a deficient number, since it is larger than the sum of its proper divisors (506700161973).

1066166016651 is a wasteful number, since it uses less digits than its factorization.

1066166016651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131891 (or 131888 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 1066166016651 in words is "one trillion, sixty-six billion, one hundred sixty-six million, sixteen thousand, six hundred fifty-one".