2604843777556 has 12 divisors (see below), whose sum is σ = 4798396432480. Its totient is φ = 1233873368280.

The previous prime is 2604843777527. The next prime is 2604843777587. The reversal of 2604843777556 is 6557773484062.

It is a super-2 number, since 2×2604843777556² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17137130040 + ... + 17137130191.

Almost surely, 2^{2604843777556} is an apocalyptic number.

It is an amenable number.

2604843777556 is a deficient number, since it is larger than the sum of its proper divisors (2193552654924).

2604843777556 is a wasteful number, since it uses less digits than its factorization.

2604843777556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34274260254 (or 34274260252 counting only the distinct ones).

The product of its (nonzero) digits is 237081600, while the sum is 64.

The spelling of 2604843777556 in words is "two trillion, six hundred four billion, eight hundred forty-three million, seven hundred seventy-seven thousand, five hundred fifty-six".