1056511055644 has 12 divisors (see below), whose sum is σ = 2016975651768. Its totient is φ = 480232298000.

The previous prime is 1056511055609. The next prime is 1056511055759. The reversal of 1056511055644 is 4465501156501.

It is a super-2 number, since 2×1056511055644² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1056511055644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12005807407 + ... + 12005807494.

It is an arithmetic number, because the mean of its divisors is an integer number (168081304314).

Almost surely, 2^{1056511055644} is an apocalyptic number.

It is an amenable number.

1056511055644 is a deficient number, since it is larger than the sum of its proper divisors (960464596124).

1056511055644 is a wasteful number, since it uses less digits than its factorization.

1056511055644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24011614916 (or 24011614914 counting only the distinct ones).

The product of its (nonzero) digits is 360000, while the sum is 43.

The spelling of 1056511055644 in words is "one trillion, fifty-six billion, five hundred eleven million, fifty-five thousand, six hundred forty-four".