1055561010556 has 12 divisors (see below), whose sum is σ = 1989326519992. Its totient is φ = 487182004848.

The previous prime is 1055561010529. The next prime is 1055561010641. The reversal of 1055561010556 is 6550101655501.

It is a super-2 number, since 2×1055561010556² (a number of 25 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

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, 10149625050 + ... + 10149625153.

Almost surely, 2^{1055561010556} is an apocalyptic number.

It is an amenable number.

1055561010556 is a deficient number, since it is larger than the sum of its proper divisors (933765509436).

1055561010556 is a wasteful number, since it uses less digits than its factorization.

1055561010556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20299250220 (or 20299250218 counting only the distinct ones).

The product of its (nonzero) digits is 112500, while the sum is 40.

The spelling of 1055561010556 in words is "one trillion, fifty-five billion, five hundred sixty-one million, ten thousand, five hundred fifty-six".