660605550100 has 18 divisors (see below), whose sum is σ = 1433514043934. Its totient is φ = 264242220000.

The previous prime is 660605550089. The next prime is 660605550107. The reversal of 660605550100 is 1055506066.

660605550100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 1264798096 + 659340752004 = 35564^2 + 811998^2 .

It is a super-2 number, since 2×660605550100² (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 (660605550107) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3303027651 + ... + 3303027850.

Almost surely, 2^660605550100 is an apocalyptic number.

It is an amenable number.

660605550100 is an abundant number, since it is smaller than the sum of its proper divisors (772908493834).

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

660605550100 is a wasteful number, since it uses less digits than its factorization.

660605550100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6606055515 (or 6606055508 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 34.

The spelling of 660605550100 in words is "six hundred sixty billion, six hundred five million, five hundred fifty thousand, one hundred".