1005565226556 has 48 divisors (see below), whose sum is σ = 2560861997568. Its totient is φ = 304568947200.

The previous prime is 1005565226551. The next prime is 1005565226557. The reversal of 1005565226556 is 6556225655001.

1005565226556 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1005565226556² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1005565226551) 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, 1574005 + ... + 2118636.

It is an arithmetic number, because the mean of its divisors is an integer number (53351291616).

Almost surely, 2^{1005565226556} is an apocalyptic number.

It is an amenable number.

1005565226556 is an abundant number, since it is smaller than the sum of its proper divisors (1555296771012).

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

1005565226556 is a wasteful number, since it uses less digits than its factorization.

1005565226556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3694722 (or 3694720 counting only the distinct ones).

The product of its (nonzero) digits is 2700000, while the sum is 48.

The spelling of 1005565226556 in words is "one trillion, five billion, five hundred sixty-five million, two hundred twenty-six thousand, five hundred fifty-six".