6655716145 has 8 divisors (see below), whose sum is σ = 8601233256. Its totient is φ = 4914990336.

The previous prime is 6655716113. The next prime is 6655716157. The reversal of 6655716145 is 5416175566.

It can be written as a sum of positive squares in 4 ways, for example, as 1275346944 + 5380369201 = 35712^2 + 73351^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 6655716145 - 2⁵ = 6655716113 is a prime.

It is a super-2 number, since 2×6655716145² = 88597114805627322050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6655716095 and 6655716104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51197752 + ... + 51197881.

It is an arithmetic number, because the mean of its divisors is an integer number (1075154157).

Almost surely, 2^6655716145 is an apocalyptic number.

6655716145 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

6655716145 is a deficient number, since it is larger than the sum of its proper divisors (1945517111).

6655716145 is a wasteful number, since it uses less digits than its factorization.

6655716145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102395651.

The product of its digits is 756000, while the sum is 46.

The square root of 6655716145 is about 81582.5725568886. The cubic root of 6655716145 is about 1881.0410094877.

The spelling of 6655716145 in words is "six billion, six hundred fifty-five million, seven hundred sixteen thousand, one hundred forty-five".