40089930128 has 40 divisors (see below), whose sum is σ = 83795103288. Its totient is φ = 18509883392.

The previous prime is 40089930073. The next prime is 40089930149. The reversal of 40089930128 is 82103998004.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 22365800704 + 17724129424 = 149552^2 + 133132^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1376051 + ... + 1404882.

Almost surely, 2^40089930128 is an apocalyptic number.

It is an amenable number.

40089930128 is an abundant number, since it is smaller than the sum of its proper divisors (43705173160).

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

40089930128 is a wasteful number, since it uses less digits than its factorization.

40089930128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2781011 (or 2781005 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 40089930128 in words is "forty billion, eighty-nine million, nine hundred thirty thousand, one hundred twenty-eight".