40383830691 has 20 divisors (see below), whose sum is σ = 61053298152. Its totient is φ = 26598181248.

The previous prime is 40383830689. The next prime is 40383830731. The reversal of 40383830691 is 19603838304.

40383830691 is a `hidden beast` number, since 403 + 83 + 83 + 0 + 6 + 91 = 666.

It is not a de Polignac number, because 40383830691 - 2¹ = 40383830689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40383830791) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2996686 + ... + 3010131.

Almost surely, 2^40383830691 is an apocalyptic number.

40383830691 is a deficient number, since it is larger than the sum of its proper divisors (20669467461).

40383830691 is an equidigital number, since it uses as much as digits as its factorization.

40383830691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6006912 (or 6006903 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The spelling of 40383830691 in words is "forty billion, three hundred eighty-three million, eight hundred thirty thousand, six hundred ninety-one".