1004666646261 has 8 divisors (see below), whose sum is σ = 1349192619040. Its totient is φ = 664959218832.

The previous prime is 1004666646229. The next prime is 1004666646329. The reversal of 1004666646261 is 1626466664001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1004666646261 - 2⁵ = 1004666646229 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1004666646261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004666642261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1204635850 + ... + 1204636683.

It is an arithmetic number, because the mean of its divisors is an integer number (168649077380).

Almost surely, 2^{1004666646261} is an apocalyptic number.

It is an amenable number.

1004666646261 is a deficient number, since it is larger than the sum of its proper divisors (344525972779).

1004666646261 is a wasteful number, since it uses less digits than its factorization.

1004666646261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2409272675.

The product of its (nonzero) digits is 1492992, while the sum is 48.

The spelling of 1004666646261 in words is "one trillion, four billion, six hundred sixty-six million, six hundred forty-six thousand, two hundred sixty-one".