65435536320 has 448 divisors, whose sum is σ = 259614692352. Its totient is φ = 13565952000.

The previous prime is 65435536301. The next prime is 65435536363. The reversal of 65435536320 is 2363553456.

It is a tau number, because it is divible by the number of its divisors (448).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 47382030 + ... + 47383410.

Almost surely, 2^65435536320 is an apocalyptic number.

65435536320 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 65435536320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129807346176).

65435536320 is an abundant number, since it is smaller than the sum of its proper divisors (194179156032).

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

65435536320 is a wasteful number, since it uses less digits than its factorization.

65435536320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2060 (or 2050 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 42.

The spelling of 65435536320 in words is "sixty-five billion, four hundred thirty-five million, five hundred thirty-six thousand, three hundred twenty".