665065500100 has 36 divisors (see below), whose sum is σ = 1443320093824. Its totient is φ = 266002613280.

The previous prime is 665065500089. The next prime is 665065500101. The reversal of 665065500100 is 1005560566.

It is not an unprimeable number, because it can be changed into a prime (665065500101) 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, 861217 + ... + 1439383.

Almost surely, 2^665065500100 is an apocalyptic number.

It is an amenable number.

665065500100 is an abundant number, since it is smaller than the sum of its proper divisors (778254593724).

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

665065500100 is a wasteful number, since it uses less digits than its factorization.

665065500100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589684 (or 589677 counting only the distinct ones).

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

The spelling of 665065500100 in words is "six hundred sixty-five billion, sixty-five million, five hundred thousand, one hundred".