65512661500 has 96 divisors (see below), whose sum is σ = 168093761472. Its totient is φ = 21990240000.

The previous prime is 65512661483. The next prime is 65512661519. The reversal of 65512661500 is 516621556.

It is a self number, because there is not a number n which added to its sum of digits gives 65512661500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 386631 + ... + 529630.

It is an arithmetic number, because the mean of its divisors is an integer number (1750976682).

Almost surely, 2^65512661500 is an apocalyptic number.

It is an amenable number.

65512661500 is an abundant number, since it is smaller than the sum of its proper divisors (102581099972).

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

65512661500 is a wasteful number, since it uses less digits than its factorization.

65512661500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916304 (or 916292 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 37.

The spelling of 65512661500 in words is "sixty-five billion, five hundred twelve million, six hundred sixty-one thousand, five hundred".