40066223616 has 200 divisors, whose sum is σ = 120718132920. Its totient is φ = 13229125632.

The previous prime is 40066223581. The next prime is 40066223623. The reversal of 40066223616 is 61632266004.

40066223616 is a `hidden beast` number, since 400 + 6 + 6 + 2 + 236 + 16 = 666.

It is a super-2 number, since 2×40066223616² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 4432990 + ... + 4442018.

Almost surely, 2^40066223616 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 40066223616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60359066460).

40066223616 is an abundant number, since it is smaller than the sum of its proper divisors (80651909304).

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

40066223616 is an equidigital number, since it uses as much as digits as its factorization.

40066223616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9166 (or 9141 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 36.

The spelling of 40066223616 in words is "forty billion, sixty-six million, two hundred twenty-three thousand, six hundred sixteen".