656706280011 has 8 divisors (see below), whose sum is σ = 913678302720. Its totient is φ = 418769221992.

The previous prime is 656706279997. The next prime is 656706280049. The reversal of 656706280011 is 110082607656.

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

It is not a de Polignac number, because 656706280011 - 2⁷ = 656706279883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (656706280211) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4758741091 + ... + 4758741228.

It is an arithmetic number, because the mean of its divisors is an integer number (114209787840).

Almost surely, 2^656706280011 is an apocalyptic number.

656706280011 is a deficient number, since it is larger than the sum of its proper divisors (256972022709).

656706280011 is a wasteful number, since it uses less digits than its factorization.

656706280011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9517482345.

The product of its (nonzero) digits is 120960, while the sum is 42.

Adding to 656706280011 its reverse (110082607656), we get a palindrome (766788887667).

The spelling of 656706280011 in words is "six hundred fifty-six billion, seven hundred six million, two hundred eighty thousand, eleven".