65441356500 has 384 divisors, whose sum is σ = 219207905280. Its totient is φ = 15047424000.

The previous prime is 65441356439. The next prime is 65441356577. The reversal of 65441356500 is 565314456.

It is a super-2 number, since 2×65441356500² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 17528634 + ... + 17532366.

It is an arithmetic number, because the mean of its divisors is an integer number (570853920).

Almost surely, 2^65441356500 is an apocalyptic number.

65441356500 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 65441356500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109603952640).

65441356500 is an abundant number, since it is smaller than the sum of its proper divisors (153766548780).

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

65441356500 is a wasteful number, since it uses less digits than its factorization.

65441356500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3828 (or 3816 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 39.

The spelling of 65441356500 in words is "sixty-five billion, four hundred forty-one million, three hundred fifty-six thousand, five hundred".