1011666005 has 48 divisors (see below), whose sum is σ = 1502187120. Its totient is φ = 649893888.

The previous prime is 1011665989. The next prime is 1011666011. The reversal of 1011666005 is 5006661101.

1011666005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 146482609 + 865183396 = 12103^2 + 29414^2 .

It is not a de Polignac number, because 1011666005 - 2⁴ = 1011665989 is a prime.

It is a super-3 number, since 3×1011666005³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1219931 + ... + 1220759.

It is an arithmetic number, because the mean of its divisors is an integer number (31295565).

Almost surely, 2^1011666005 is an apocalyptic number.

It is an amenable number.

1011666005 is a deficient number, since it is larger than the sum of its proper divisors (490521115).

1011666005 is a wasteful number, since it uses less digits than its factorization.

1011666005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158 (or 1151 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 1011666005 is about 31806.6974865358. The cubic root of 1011666005 is about 1003.8736438419.

The spelling of 1011666005 in words is "one billion, eleven million, six hundred sixty-six thousand, five".