5665555511656 has 8 divisors (see below), whose sum is σ = 10622916584370. Its totient is φ = 2832777755824.

The previous prime is 5665555511647. The next prime is 5665555511659. The reversal of 5665555511656 is 6561155555665.

It can be written as a sum of positive squares in only one way, i.e., 5275887424900 + 389668086756 = 2296930^2 + 624234^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 5665555511594 and 5665555511603.

It is not an unprimeable number, because it can be changed into a prime (5665555511659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 354097219471 + ... + 354097219486.

Almost surely, 2^{5665555511656} is an apocalyptic number.

It is an amenable number.

5665555511656 is a deficient number, since it is larger than the sum of its proper divisors (4957361072714).

5665555511656 is a wasteful number, since it uses less digits than its factorization.

5665555511656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708194438963 (or 708194438959 counting only the distinct ones).

The product of its digits is 101250000, while the sum is 61.

The spelling of 5665555511656 in words is "five trillion, six hundred sixty-five billion, five hundred fifty-five million, five hundred eleven thousand, six hundred fifty-six".