65520150000 has 120 divisors (see below), whose sum is σ = 211562427888. Its totient is φ = 17472000000.

The previous prime is 65520149971. The next prime is 65520150019. The reversal of 65520150000 is 5102556.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 68401 + ... + 368400.

Almost surely, 2^65520150000 is an apocalyptic number.

65520150000 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 65520150000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105781213944).

65520150000 is an abundant number, since it is smaller than the sum of its proper divisors (146042277888).

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

65520150000 is an equidigital number, since it uses as much as digits as its factorization.

65520150000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436837 (or 436811 counting only the distinct ones).

The product of its (nonzero) digits is 1500, while the sum is 24.

Adding to 65520150000 its reverse (5102556), we get a palindrome (65525252556).

The spelling of 65520150000 in words is "sixty-five billion, five hundred twenty million, one hundred fifty thousand".