65487444000 has 384 divisors, whose sum is σ = 234805858560. Its totient is φ = 15823872000.

The previous prime is 65487443993. The next prime is 65487444007. The reversal of 65487444000 is 44478456.

65487444000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (65487443993) and next prime (65487444007).

It is not an unprimeable number, because it can be changed into a prime (65487444007) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 53987394 + ... + 53988606.

It is an arithmetic number, because the mean of its divisors is an integer number (611473590).

Almost surely, 2^65487444000 is an apocalyptic number.

65487444000 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 65487444000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117402929280).

65487444000 is an abundant number, since it is smaller than the sum of its proper divisors (169318414560).

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

65487444000 is a wasteful number, since it uses less digits than its factorization.

65487444000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661 (or 1643 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 42.

The spelling of 65487444000 in words is "sixty-five billion, four hundred eighty-seven million, four hundred forty-four thousand".