2661604305546 has 32 divisors (see below), whose sum is σ = 5643689587200. Its totient is φ = 834459807600.

The previous prime is 2661604305541. The next prime is 2661604305587. The reversal of 2661604305546 is 6455034061662.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2661604305495 and 2661604305504.

It is not an unprimeable number, because it can be changed into a prime (2661604305541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 83967630 + ... + 83999321.

It is an arithmetic number, because the mean of its divisors is an integer number (176365299600).

Almost surely, 2^{2661604305546} is an apocalyptic number.

2661604305546 is an abundant number, since it is smaller than the sum of its proper divisors (2982085281654).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2661604305546 is a wasteful number, since it uses less digits than its factorization.

2661604305546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167967114.

The product of its (nonzero) digits is 3110400, while the sum is 48.

The spelling of 2661604305546 in words is "two trillion, six hundred sixty-one billion, six hundred four million, three hundred five thousand, five hundred forty-six".