205656050606556 has 48 divisors (see below), whose sum is σ = 524946313140480. Its totient is φ = 62146421963520.

The previous prime is 205656050606551. The next prime is 205656050606561. The reversal of 205656050606556 is 655606050656502.

It is an interprime number because it is at equal distance from previous prime (205656050606551) and next prime (205656050606561).

It is a super-2 number, since 2×205656050606556² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 205656050606496 and 205656050606505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205656050606551) 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, 2169869581 + ... + 2169964356.

It is an arithmetic number, because the mean of its divisors is an integer number (10936381523760).

Almost surely, 2^{205656050606556} is an apocalyptic number.

It is an amenable number.

205656050606556 is an abundant number, since it is smaller than the sum of its proper divisors (319290262533924).

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

205656050606556 is a wasteful number, since it uses less digits than its factorization.

205656050606556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4339834314 (or 4339834312 counting only the distinct ones).

The product of its (nonzero) digits is 48600000, while the sum is 57.

The spelling of 205656050606556 in words is "two hundred five trillion, six hundred fifty-six billion, fifty million, six hundred six thousand, five hundred fifty-six".