65529472000 has 176 divisors, whose sum is σ = 165744803952. Its totient is φ = 25849036800.

The previous prime is 65529471989. The next prime is 65529472009. The reversal of 65529472000 is 27492556.

It can be written as a sum of positive squares in 8 ways, for example, as 9166913536 + 56362558464 = 95744^2 + 237408^2 .

It is a super-2 number, since 2×65529472000² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (65529472009) 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, 9340494 + ... + 9347506.

Almost surely, 2^65529472000 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 65529472000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82872401976).

65529472000 is an abundant number, since it is smaller than the sum of its proper divisors (100215331952).

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

65529472000 is an equidigital number, since it uses as much as digits as its factorization.

65529472000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7121 (or 7093 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The spelling of 65529472000 in words is "sixty-five billion, five hundred twenty-nine million, four hundred seventy-two thousand".