1055665676856 has 128 divisors (see below), whose sum is σ = 3080998010880. Its totient is φ = 295140383616.

The previous prime is 1055665676843. The next prime is 1055665676867. The reversal of 1055665676856 is 6586765665501.

It is a super-2 number, since 2×1055665676856² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49441975 + ... + 49463321.

It is an arithmetic number, because the mean of its divisors is an integer number (24070296960).

Almost surely, 2^{1055665676856} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1055665676856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1540499005440).

1055665676856 is an abundant number, since it is smaller than the sum of its proper divisors (2025332334024).

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

1055665676856 is a wasteful number, since it uses less digits than its factorization.

1055665676856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27673 (or 27669 counting only the distinct ones).

The product of its (nonzero) digits is 272160000, while the sum is 66.

The spelling of 1055665676856 in words is "one trillion, fifty-five billion, six hundred sixty-five million, six hundred seventy-six thousand, eight hundred fifty-six".