56665898116 has 27 divisors (see below), whose sum is σ = 101678005093. Its totient is φ = 27632379680.

The previous prime is 56665898101. The next prime is 56665898119. The reversal of 56665898116 is 61189856665.

The square root of 56665898116 is 238046.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2730480516 + 53935417600 = 52254^2 + 232240^2 .

It is a super-2 number, since 2×56665898116² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56665898119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 19518321 + ... + 19521223.

Almost surely, 2^56665898116 is an apocalyptic number.

56665898116 is the 238046-th square number.

It is an amenable number.

56665898116 is a deficient number, since it is larger than the sum of its proper divisors (45012106977).

56665898116 is an frugal number, since it uses more digits than its factorization.

56665898116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5892 (or 2946 counting only the distinct ones).

The product of its digits is 18662400, while the sum is 61.

The spelling of 56665898116 in words is "fifty-six billion, six hundred sixty-five million, eight hundred ninety-eight thousand, one hundred sixteen".