1670646289009 has 4 divisors (see below), whose sum is σ = 1671692406004. Its totient is φ = 1669600172016.

The previous prime is 1670646288973. The next prime is 1670646289127. The reversal of 1670646289009 is 9009826460761.

It is a happy number.

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 564531330609 + 1106114958400 = 751353^2 + 1051720^2 .

It is a cyclic number.

It is not a de Polignac number, because 1670646289009 - 2¹³ = 1670646280817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1670646289909) 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, 523056102 + ... + 523059295.

It is an arithmetic number, because the mean of its divisors is an integer number (417923101501).

Almost surely, 2^{1670646289009} is an apocalyptic number.

It is an amenable number.

1670646289009 is a deficient number, since it is larger than the sum of its proper divisors (1046116995).

1670646289009 is a wasteful number, since it uses less digits than its factorization.

1670646289009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1046116994.

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 1670646289009 in words is "one trillion, six hundred seventy billion, six hundred forty-six million, two hundred eighty-nine thousand, nine".