65361233280 has 768 divisors, whose sum is σ = 254424360960. Its totient is φ = 14213283840.

The previous prime is 65361233251. The next prime is 65361233291. The reversal of 65361233280 is 8233216356.

65361233280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 212902887 + ... + 212903193.

It is an arithmetic number, because the mean of its divisors is an integer number (331281720).

Almost surely, 2^65361233280 is an apocalyptic number.

65361233280 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 65361233280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127212180480).

65361233280 is an abundant number, since it is smaller than the sum of its proper divisors (189063127680).

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

65361233280 is a wasteful number, since it uses less digits than its factorization.

65361233280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The spelling of 65361233280 in words is "sixty-five billion, three hundred sixty-one million, two hundred thirty-three thousand, two hundred eighty".