4066422064240 has 80 divisors (see below), whose sum is σ = 9513713083392. Its totient is φ = 1616375284992.

The previous prime is 4066422064141. The next prime is 4066422064241. The reversal of 4066422064240 is 424602246604.

It is a tau number, because it is divible by the number of its divisors (80).

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

It is a junction number, because it is equal to n+sod(n) for n = 4066422064193 and 4066422064202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4066422064241) 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, 49751887 + ... + 49833553.

Almost surely, 2^{4066422064240} is an apocalyptic number.

4066422064240 is a gapful number since it is divisible by the number (40) 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 4066422064240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4756856541696).

4066422064240 is an abundant number, since it is smaller than the sum of its proper divisors (5447291019152).

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

4066422064240 is a wasteful number, since it uses less digits than its factorization.

4066422064240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85574 (or 85568 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 40.

The spelling of 4066422064240 in words is "four trillion, sixty-six billion, four hundred twenty-two million, sixty-four thousand, two hundred forty".