65340721100 has 36 divisors (see below), whose sum is σ = 141930108600. Its totient is φ = 26110344960.

The previous prime is 65340721013. The next prime is 65340721141. The reversal of 65340721100 is 112704356.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 222890 + ... + 424689.

Almost surely, 2^65340721100 is an apocalyptic number.

It is an amenable number.

65340721100 is an abundant number, since it is smaller than the sum of its proper divisors (76589387500).

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

65340721100 is a wasteful number, since it uses less digits than its factorization.

65340721100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648602 (or 648595 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The spelling of 65340721100 in words is "sixty-five billion, three hundred forty million, seven hundred twenty-one thousand, one hundred".