65520616600 has 24 divisors (see below), whose sum is σ = 152335434060. Its totient is φ = 26208246560.

The previous prime is 65520616571. The next prime is 65520616607. The reversal of 65520616600 is 661602556.

It is a self number, because there is not a number n which added to its sum of digits gives 65520616600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65520616607) 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, 163801342 + ... + 163801741.

Almost surely, 2^65520616600 is an apocalyptic number.

It is an amenable number.

65520616600 is an abundant number, since it is smaller than the sum of its proper divisors (86814817460).

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

65520616600 is a wasteful number, since it uses less digits than its factorization.

65520616600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327603099 (or 327603090 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 37.

The spelling of 65520616600 in words is "sixty-five billion, five hundred twenty million, six hundred sixteen thousand, six hundred".