1166654442679 has 4 divisors (see below), whose sum is σ = 1272713937480. Its totient is φ = 1060594947880.

The previous prime is 1166654442677. The next prime is 1166654442719. The reversal of 1166654442679 is 9762444566611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1166654442679 - 2¹ = 1166654442677 is a prime.

It is a super-2 number, since 2×1166654442679² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166654442673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53029747384 + ... + 53029747405.

It is an arithmetic number, because the mean of its divisors is an integer number (318178484370).

Almost surely, 2^{1166654442679} is an apocalyptic number.

1166654442679 is a deficient number, since it is larger than the sum of its proper divisors (106059494801).

1166654442679 is a wasteful number, since it uses less digits than its factorization.

1166654442679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106059494800.

The product of its digits is 52254720, while the sum is 61.

The spelling of 1166654442679 in words is "one trillion, one hundred sixty-six billion, six hundred fifty-four million, four hundred forty-two thousand, six hundred seventy-nine".