1000166005651 has 24 divisors (see below), whose sum is σ = 1020177343296. Its totient is φ = 980529295680.

The previous prime is 1000166005649. The next prime is 1000166005669. The reversal of 1000166005651 is 1565006610001.

It is not a de Polignac number, because 1000166005651 - 2¹ = 1000166005649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000166005681) 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, 1030036596 + ... + 1030037566.

It is an arithmetic number, because the mean of its divisors is an integer number (42507389304).

Almost surely, 2^{1000166005651} is an apocalyptic number.

1000166005651 is a deficient number, since it is larger than the sum of its proper divisors (20011337645).

1000166005651 is an frugal number, since it uses more digits than its factorization.

1000166005651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2083 (or 2010 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 1000166005651 in words is "one trillion, one hundred sixty-six million, five thousand, six hundred fifty-one".