656000051111 has 8 divisors (see below), whose sum is σ = 662543042448. Its totient is φ = 649458000000.

The previous prime is 656000051051. The next prime is 656000051129. The reversal of 656000051111 is 111150000656.

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 656000051111 - 2¹⁰ = 656000050087 is a prime.

It is a super-2 number, since 2×656000051111² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656000051171) 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, 1211471 + ... + 1667231.

It is an arithmetic number, because the mean of its divisors is an integer number (82817880306).

Almost surely, 2^656000051111 is an apocalyptic number.

656000051111 is a deficient number, since it is larger than the sum of its proper divisors (6542991337).

656000051111 is a wasteful number, since it uses less digits than its factorization.

656000051111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470113.

The product of its (nonzero) digits is 900, while the sum is 26.

Adding to 656000051111 its reverse (111150000656), we get a palindrome (767150051767).

The spelling of 656000051111 in words is "six hundred fifty-six billion, fifty-one thousand, one hundred eleven".