1056660213646 has 8 divisors (see below), whose sum is σ = 1599016783824. Its totient is φ = 523654619040.

The previous prime is 1056660213619. The next prime is 1056660213649. The reversal of 1056660213646 is 6463120666501.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1056660213646² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1056660213596 and 1056660213605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056660213649) by changing a digit.

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, 2337743610 + ... + 2337744061.

It is an arithmetic number, because the mean of its divisors is an integer number (199877097978).

Almost surely, 2^{1056660213646} is an apocalyptic number.

1056660213646 is a deficient number, since it is larger than the sum of its proper divisors (542356570178).

1056660213646 is a wasteful number, since it uses less digits than its factorization.

1056660213646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4675487786.

The product of its (nonzero) digits is 933120, while the sum is 46.

The spelling of 1056660213646 in words is "one trillion, fifty-six billion, six hundred sixty million, two hundred thirteen thousand, six hundred forty-six".