1065662620056 has 128 divisors (see below), whose sum is σ = 2996053920000. Its totient is φ = 350922274560.

The previous prime is 1065662620031. The next prime is 1065662620063. The reversal of 1065662620056 is 6500262665601.

It is a happy number.

1065662620056 is a `hidden beast` number, since 10 + 6 + 5 + 6 + 6 + 2 + 620 + 0 + 5 + 6 = 666.

It is a super-2 number, since 2×1065662620056² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1065662619993 and 1065662620020.

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, 22487635 + ... + 22534973.

It is an arithmetic number, because the mean of its divisors is an integer number (23406671250).

Almost surely, 2^{1065662620056} 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 1065662620056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1498026960000).

1065662620056 is an abundant number, since it is smaller than the sum of its proper divisors (1930391299944).

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

1065662620056 is a wasteful number, since it uses less digits than its factorization.

1065662620056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48614 (or 48604 counting only the distinct ones).

The product of its (nonzero) digits is 777600, while the sum is 45.

The spelling of 1065662620056 in words is "one trillion, sixty-five billion, six hundred sixty-two million, six hundred twenty thousand, fifty-six".