2009087610661 has 8 divisors (see below), whose sum is σ = 2063982558240. Its totient is φ = 1954223993808.

The previous prime is 2009087610637. The next prime is 2009087610679. The reversal of 2009087610661 is 1660167809002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2009087610661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2009087610611) 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, 7702651 + ... + 7959208.

It is an arithmetic number, because the mean of its divisors is an integer number (257997819780).

Almost surely, 2^{2009087610661} is an apocalyptic number.

It is an amenable number.

2009087610661 is a deficient number, since it is larger than the sum of its proper divisors (54894947579).

2009087610661 is a wasteful number, since it uses less digits than its factorization.

2009087610661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15665363.

The product of its (nonzero) digits is 217728, while the sum is 46.

The spelling of 2009087610661 in words is "two trillion, nine billion, eighty-seven million, six hundred ten thousand, six hundred sixty-one".