40139511689 has 2 divisors, whose sum is σ = 40139511690. Its totient is φ = 40139511688.

The previous prime is 40139511683. The next prime is 40139511751. The reversal of 40139511689 is 98611593104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34849422400 + 5290089289 = 186680^2 + 72733^2 .

It is a cyclic number.

It is not a de Polignac number, because 40139511689 - 2¹² = 40139507593 is a prime.

It is a super-3 number, since 3×40139511689³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (40139511683) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20069755844 + 20069755845.

It is an arithmetic number, because the mean of its divisors is an integer number (20069755845).

Almost surely, 2^40139511689 is an apocalyptic number.

It is an amenable number.

40139511689 is a deficient number, since it is larger than the sum of its proper divisors (1).

40139511689 is an equidigital number, since it uses as much as digits as its factorization.

40139511689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 47.

The spelling of 40139511689 in words is "forty billion, one hundred thirty-nine million, five hundred eleven thousand, six hundred eighty-nine".