40218425856 has 800 divisors, whose sum is σ = 146400629760. Its totient is φ = 10749542400.

The previous prime is 40218425843. The next prime is 40218425879. The reversal of 40218425856 is 65852481204.

40218425856 is a `hidden beast` number, since 4 + 0 + 21 + 8 + 42 + 585 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 368976330 + ... + 368976438.

Almost surely, 2^40218425856 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 40218425856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73200314880).

40218425856 is an abundant number, since it is smaller than the sum of its proper divisors (106182203904).

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

40218425856 is a wasteful number, since it uses less digits than its factorization.

40218425856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 218 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 45.

The spelling of 40218425856 in words is "forty billion, two hundred eighteen million, four hundred twenty-five thousand, eight hundred fifty-six".