40005000156 has 288 divisors, whose sum is σ = 115402291200. Its totient is φ = 10724313600.

The previous prime is 40005000149. The next prime is 40005000181. The reversal of 40005000156 is 65100050004.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 24800806 + ... + 24802418.

It is an arithmetic number, because the mean of its divisors is an integer number (400702400).

Almost surely, 2^40005000156 is an apocalyptic number.

It is a pronic number, being equal to 200012×200013.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40005000156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57701145600).

40005000156 is an abundant number, since it is smaller than the sum of its proper divisors (75397291044).

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

40005000156 is a wasteful number, since it uses less digits than its factorization.

40005000156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721 (or 1708 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The spelling of 40005000156 in words is "forty billion, five million, one hundred fifty-six", and thus it is an aban number.