1002166356001 has 4 divisors (see below), whose sum is σ = 1004616640900. Its totient is φ = 999716071104.

The previous prime is 1002166355987. The next prime is 1002166356127. The reversal of 1002166356001 is 1006536612001.

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

It can be written as a sum of positive squares in 2 ways, for example, as 735134760000 + 267031596001 = 857400^2 + 516751^2 .

It is a cyclic number.

It is not a de Polignac number, because 1002166356001 - 2⁷ = 1002166355873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002166359001) 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, 1225141836 + ... + 1225142653.

It is an arithmetic number, because the mean of its divisors is an integer number (251154160225).

Almost surely, 2^{1002166356001} is an apocalyptic number.

It is an amenable number.

1002166356001 is a deficient number, since it is larger than the sum of its proper divisors (2450284899).

1002166356001 is an equidigital number, since it uses as much as digits as its factorization.

1002166356001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2450284898.

The product of its (nonzero) digits is 6480, while the sum is 31.

The spelling of 1002166356001 in words is "one trillion, two billion, one hundred sixty-six million, three hundred fifty-six thousand, one".