65333399040 has 1920 divisors, whose sum is σ = 310557265920. Its totient is φ = 12697731072.

The previous prime is 65333398937. The next prime is 65333399111. The reversal of 65333399040 is 4099333356.

It is a tau number, because it is divible by the number of its divisors (1920).

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, 1390072297 + ... + 1390072343.

It is an arithmetic number, because the mean of its divisors is an integer number (161748576).

Almost surely, 2^65333399040 is an apocalyptic number.

65333399040 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 65333399040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (155278632960).

65333399040 is an abundant number, since it is smaller than the sum of its proper divisors (245223866880).

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

65333399040 is a wasteful number, since it uses less digits than its factorization.

65333399040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129 (or 94 counting only the distinct ones).

The product of its (nonzero) digits is 787320, while the sum is 45.

The spelling of 65333399040 in words is "sixty-five billion, three hundred thirty-three million, three hundred ninety-nine thousand, forty".