2403320664661 has 8 divisors (see below), whose sum is σ = 2760883548224. Its totient is φ = 2049315621120.

The previous prime is 2403320664593. The next prime is 2403320664709. The reversal of 2403320664661 is 1664660233042.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2403320664661 - 2⁷ = 2403320664533 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 (2403320664061) 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, 889458555 + ... + 889461256.

It is an arithmetic number, because the mean of its divisors is an integer number (345110443528).

Almost surely, 2^{2403320664661} is an apocalyptic number.

It is an amenable number.

2403320664661 is a deficient number, since it is larger than the sum of its proper divisors (357562883563).

2403320664661 is a wasteful number, since it uses less digits than its factorization.

2403320664661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778920011.

The product of its (nonzero) digits is 746496, while the sum is 43.

The spelling of 2403320664661 in words is "two trillion, four hundred three billion, three hundred twenty million, six hundred sixty-four thousand, six hundred sixty-one".