40018541508 has 432 divisors, whose sum is σ = 121493980608. Its totient is φ = 11496038400.

The previous prime is 40018541473. The next prime is 40018541531. The reversal of 40018541508 is 80514581004.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 207349860 + ... + 207350052.

Almost surely, 2^40018541508 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 40018541508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60746990304).

40018541508 is an abundant number, since it is smaller than the sum of its proper divisors (81475439100).

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

40018541508 is a wasteful number, since it uses less digits than its factorization.

40018541508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318 (or 293 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 36.

The spelling of 40018541508 in words is "forty billion, eighteen million, five hundred forty-one thousand, five hundred eight".