40001304168 has 128 divisors (see below), whose sum is σ = 127047168000. Its totient is φ = 11423643840.

The previous prime is 40001304139. The next prime is 40001304169. The reversal of 40001304168 is 86140310004.

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

It is not an unprimeable number, because it can be changed into a prime (40001304169) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4215253 + ... + 4224731.

It is an arithmetic number, because the mean of its divisors is an integer number (992556000).

Almost surely, 2^40001304168 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 40001304168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63523584000).

40001304168 is an abundant number, since it is smaller than the sum of its proper divisors (87045863832).

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

40001304168 is a wasteful number, since it uses less digits than its factorization.

40001304168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12292 (or 12282 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The spelling of 40001304168 in words is "forty billion, one million, three hundred four thousand, one hundred sixty-eight".