40502318220 has 480 divisors, whose sum is σ = 160216189056. Its totient is φ = 8335872000.

The previous prime is 40502318201. The next prime is 40502318239. The reversal of 40502318220 is 2281320504.

40502318220 is a `hidden beast` number, since 405 + 0 + 2 + 31 + 8 + 220 = 666.

It is an interprime number because it is at equal distance from previous prime (40502318201) and next prime (40502318239).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 6040870 + ... + 6047570.

Almost surely, 2^40502318220 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 40502318220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80108094528).

40502318220 is an abundant number, since it is smaller than the sum of its proper divisors (119713870836).

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

40502318220 is a wasteful number, since it uses less digits than its factorization.

40502318220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6783 (or 6772 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 40502318220 its reverse (2281320504), we get a palindrome (42783638724).

The spelling of 40502318220 in words is "forty billion, five hundred two million, three hundred eighteen thousand, two hundred twenty".