40136616613 has 2 divisors, whose sum is σ = 40136616614. Its totient is φ = 40136616612.

The previous prime is 40136616571. The next prime is 40136616617. The reversal of 40136616613 is 31661663104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40114882369 + 21734244 = 200287^2 + 4662^2 .

It is a cyclic number.

It is not a de Polignac number, because 40136616613 - 2³³ = 31546682021 is a prime.

It is a super-2 number, since 2×40136616613² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40136616617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20068308306 + 20068308307.

It is an arithmetic number, because the mean of its divisors is an integer number (20068308307).

Almost surely, 2^40136616613 is an apocalyptic number.

It is an amenable number.

40136616613 is a deficient number, since it is larger than the sum of its proper divisors (1).

40136616613 is an equidigital number, since it uses as much as digits as its factorization.

40136616613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 37.

The spelling of 40136616613 in words is "forty billion, one hundred thirty-six million, six hundred sixteen thousand, six hundred thirteen".