656611100243 has 8 divisors (see below), whose sum is σ = 751572525312. Its totient is φ = 561939635016.

The previous prime is 656611100209. The next prime is 656611100263. The reversal of 656611100243 is 342001116656.

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 656611100243 - 2²⁰ = 656610051667 is a prime.

It is a super-2 number, since 2×656611100243² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (656611100263) 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, 72485105 + ... + 72494162.

It is an arithmetic number, because the mean of its divisors is an integer number (93946565664).

Almost surely, 2^656611100243 is an apocalyptic number.

656611100243 is a deficient number, since it is larger than the sum of its proper divisors (94961425069).

656611100243 is a wasteful number, since it uses less digits than its factorization.

656611100243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144979921.

The product of its (nonzero) digits is 25920, while the sum is 35.

Adding to 656611100243 its reverse (342001116656), we get a palindrome (998612216899).

The spelling of 656611100243 in words is "six hundred fifty-six billion, six hundred eleven million, one hundred thousand, two hundred forty-three".