656541660100 has 36 divisors (see below), whose sum is σ = 1457827863184. Its totient is φ = 256509298080.

The previous prime is 656541660097. The next prime is 656541660107. The reversal of 656541660100 is 1066145656.

It is not an unprimeable number, because it can be changed into a prime (656541660107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76337754 + ... + 76346353.

Almost surely, 2^656541660100 is an apocalyptic number.

It is an amenable number.

656541660100 is an abundant number, since it is smaller than the sum of its proper divisors (801286203084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

656541660100 is a wasteful number, since it uses less digits than its factorization.

656541660100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152684164 (or 152684157 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The spelling of 656541660100 in words is "six hundred fifty-six billion, five hundred forty-one million, six hundred sixty thousand, one hundred".