656601610100 has 36 divisors (see below), whose sum is σ = 1470787613568. Its totient is φ = 254168364000.

The previous prime is 656601610087. The next prime is 656601610103. The reversal of 656601610100 is 1016106656.

It is a super-2 number, since 2×656601610100² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656601610103) 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, 105900386 + ... + 105906585.

It is an arithmetic number, because the mean of its divisors is an integer number (40855211488).

Almost surely, 2^656601610100 is an apocalyptic number.

It is an amenable number.

656601610100 is an abundant number, since it is smaller than the sum of its proper divisors (814186003468).

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

656601610100 is a wasteful number, since it uses less digits than its factorization.

656601610100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211807016 (or 211807009 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

Adding to 656601610100 its reverse (1016106656), we get a palindrome (657617716756).

The spelling of 656601610100 in words is "six hundred fifty-six billion, six hundred one million, six hundred ten thousand, one hundred".