40200001605 has 12 divisors (see below), whose sum is σ = 69680002860. Its totient is φ = 21440000832.

The previous prime is 40200001591. The next prime is 40200001613. The reversal of 40200001605 is 50610000204.

It is a happy number.

40200001605 is a `hidden beast` number, since 40 + 20 + 0 + 0 + 0 + 1 + 605 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 10268579556 + 29931422049 = 101334^2 + 173007^2 .

It is not a de Polignac number, because 40200001605 - 2³⁵ = 5840263237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 446666640 + ... + 446666729.

It is an arithmetic number, because the mean of its divisors is an integer number (5806666905).

Almost surely, 2^40200001605 is an apocalyptic number.

40200001605 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40200001605 is a deficient number, since it is larger than the sum of its proper divisors (29480001255).

40200001605 is a wasteful number, since it uses less digits than its factorization.

40200001605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 893333380 (or 893333377 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

Adding to 40200001605 its reverse (50610000204), we get a palindrome (90810001809).

The spelling of 40200001605 in words is "forty billion, two hundred million, one thousand, six hundred five".