40254126066 has 256 divisors, whose sum is σ = 119335219200. Its totient is φ = 9741772800.

The previous prime is 40254126007. The next prime is 40254126067. The reversal of 40254126066 is 66062145204.

40254126066 is a `hidden beast` number, since 4 + 0 + 2 + 5 + 41 + 2 + 606 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 40254126066.

It is not an unprimeable number, because it can be changed into a prime (40254126067) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4814946 + ... + 4823298.

It is an arithmetic number, because the mean of its divisors is an integer number (466153200).

Almost surely, 2^40254126066 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40254126066, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59667609600).

40254126066 is an abundant number, since it is smaller than the sum of its proper divisors (79081093134).

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

40254126066 is a wasteful number, since it uses less digits than its factorization.

40254126066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8462 (or 8456 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 40254126066 in words is "forty billion, two hundred fifty-four million, one hundred twenty-six thousand, sixty-six".