40208145900 has 144 divisors (see below), whose sum is σ = 126394556064. Its totient is φ = 9809694720.

The previous prime is 40208145893. The next prime is 40208145917. The reversal of 40208145900 is 954180204.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 395082 + ... + 486318.

Almost surely, 2^40208145900 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 40208145900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (63197278032).

40208145900 is an abundant number, since it is smaller than the sum of its proper divisors (86186410164).

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

40208145900 is a wasteful number, since it uses less digits than its factorization.

40208145900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91380 (or 91373 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 40208145900 in words is "forty billion, two hundred eight million, one hundred forty-five thousand, nine hundred".