65523850560 has 1344 divisors, whose sum is σ = 285205017600. Its totient is φ = 14101807104.

The previous prime is 65523850529. The next prime is 65523850571. The reversal of 65523850560 is 6505832556.

65523850560 is a `hidden beast` number, since 6 + 5 + 5 + 2 + 3 + 85 + 0 + 560 = 666.

It is a tau number, because it is divible by the number of its divisors (1344).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 736222996 + ... + 736223084.

Almost surely, 2^65523850560 is an apocalyptic number.

65523850560 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65523850560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142602508800).

65523850560 is an abundant number, since it is smaller than the sum of its proper divisors (219681167040).

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

65523850560 is a wasteful number, since it uses less digits than its factorization.

65523850560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213 (or 190 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 45.

The spelling of 65523850560 in words is "sixty-five billion, five hundred twenty-three million, eight hundred fifty thousand, five hundred sixty".