65320992000 has 1440 divisors, whose sum is σ = 277794316800. Its totient is φ = 15095808000.

The previous prime is 65320991987. The next prime is 65320992047. The reversal of 65320992000 is 29902356.

It is a tau number, because it is divible by the number of its divisors (1440).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 826847961 + ... + 826848039.

It is an arithmetic number, because the mean of its divisors is an integer number (192912720).

Almost surely, 2^65320992000 is an apocalyptic number.

65320992000 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 65320992000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (138897158400).

65320992000 is an abundant number, since it is smaller than the sum of its proper divisors (212473324800).

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

65320992000 is a wasteful number, since it uses less digits than its factorization.

65320992000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The spelling of 65320992000 in words is "sixty-five billion, three hundred twenty million, nine hundred ninety-two thousand".