56660000101 has 2 divisors, whose sum is σ = 56660000102. Its totient is φ = 56660000100.

The previous prime is 56660000087. The next prime is 56660000129. The reversal of 56660000101 is 10100006665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56430477601 + 229522500 = 237551^2 + 15150^2 .

It is a cyclic number.

It is not a de Polignac number, because 56660000101 - 2¹¹ = 56659998053 is a prime.

It is a super-2 number, since 2×56660000101² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56660009101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28330000050 + 28330000051.

It is an arithmetic number, because the mean of its divisors is an integer number (28330000051).

Almost surely, 2^56660000101 is an apocalyptic number.

It is an amenable number.

56660000101 is a deficient number, since it is larger than the sum of its proper divisors (1).

56660000101 is an equidigital number, since it uses as much as digits as its factorization.

56660000101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 25.

Adding to 56660000101 its reverse (10100006665), we get a palindrome (66760006766).

The spelling of 56660000101 in words is "fifty-six billion, six hundred sixty million, one hundred one", and thus it is an aban number.