65361600000 has 960 divisors, whose sum is σ = 258930302400. Its totient is φ = 16220160000.

The previous prime is 65361599957. The next prime is 65361600001. The reversal of 65361600000 is 616356.

65361600000 is a `hidden beast` number, since 6 + 53 + 6 + 1 + 600 + 0 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (960).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65361600001) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 734399956 + ... + 734400044.

It is an arithmetic number, because the mean of its divisors is an integer number (269719065).

Almost surely, 2^65361600000 is an apocalyptic number.

65361600000 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 65361600000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129465151200).

65361600000 is an abundant number, since it is smaller than the sum of its proper divisors (193568702400).

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

65361600000 is an frugal number, since it uses more digits than its factorization.

65361600000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 116 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The spelling of 65361600000 in words is "sixty-five billion, three hundred sixty-one million, six hundred thousand".