65633484520 has 64 divisors (see below), whose sum is σ = 152203461120. Its totient is φ = 25453419264.

The previous prime is 65633484493. The next prime is 65633484523. The reversal of 65633484520 is 2548433656.

It is not an unprimeable number, because it can be changed into a prime (65633484523) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340489 + ... + 497191.

It is an arithmetic number, because the mean of its divisors is an integer number (2378179080).

Almost surely, 2^65633484520 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65633484520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (76101730560).

65633484520 is an abundant number, since it is smaller than the sum of its proper divisors (86569976600).

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

65633484520 is a wasteful number, since it uses less digits than its factorization.

65633484520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157034 (or 157030 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 46.

The spelling of 65633484520 in words is "sixty-five billion, six hundred thirty-three million, four hundred eighty-four thousand, five hundred twenty".