65841803720 has 192 divisors, whose sum is σ = 189760916160. Its totient is φ = 20329612800.

The previous prime is 65841803711. The next prime is 65841803771. The reversal of 65841803720 is 2730814856.

65841803720 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2292650 + ... + 2321190.

It is an arithmetic number, because the mean of its divisors is an integer number (988338105).

Almost surely, 2^65841803720 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 65841803720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94880458080).

65841803720 is an abundant number, since it is smaller than the sum of its proper divisors (123919112440).

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

65841803720 is a wasteful number, since it uses less digits than its factorization.

65841803720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28684 (or 28673 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 44.

The spelling of 65841803720 in words is "sixty-five billion, eight hundred forty-one million, eight hundred three thousand, seven hundred twenty".