65547550000 has 120 divisors (see below), whose sum is σ = 161347579344. Its totient is φ = 25788000000.

The previous prime is 65547549983. The next prime is 65547550001. The reversal of 65547550000 is 5574556.

It is a super-2 number, since 2×65547550000² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65547550001) by changing a digit.

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, 3039255 + ... + 3060745.

Almost surely, 2^65547550000 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 65547550000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80673789672).

65547550000 is an abundant number, since it is smaller than the sum of its proper divisors (95800029344).

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

65547550000 is an equidigital number, since it uses as much as digits as its factorization.

65547550000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21585 (or 21559 counting only the distinct ones).

The product of its (nonzero) digits is 105000, while the sum is 37.

The spelling of 65547550000 in words is "sixty-five billion, five hundred forty-seven million, five hundred fifty thousand".