2306661378406 has 64 divisors (see below), whose sum is σ = 4319762711040. Its totient is φ = 897448930560.

The previous prime is 2306661378401. The next prime is 2306661378409. The reversal of 2306661378406 is 6048731666032.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2306661378401) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 481655860 + ... + 481660648.

It is an arithmetic number, because the mean of its divisors is an integer number (67496292360).

Almost surely, 2^{2306661378406} is an apocalyptic number.

2306661378406 is a deficient number, since it is larger than the sum of its proper divisors (2013101332634).

2306661378406 is a wasteful number, since it uses less digits than its factorization.

2306661378406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8509.

The product of its (nonzero) digits is 5225472, while the sum is 52.

The spelling of 2306661378406 in words is "two trillion, three hundred six billion, six hundred sixty-one million, three hundred seventy-eight thousand, four hundred six".