40136518194 has 32 divisors (see below), whose sum is σ = 86781670080. Its totient is φ = 12332129472.

The previous prime is 40136518189. The next prime is 40136518199. The reversal of 40136518194 is 49181563104.

It is an interprime number because it is at equal distance from previous prime (40136518189) and next prime (40136518199).

It is a super-2 number, since 2×40136518194² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40136518199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4753549 + ... + 4761984.

It is an arithmetic number, because the mean of its divisors is an integer number (2711927190).

Almost surely, 2^40136518194 is an apocalyptic number.

40136518194 is an abundant number, since it is smaller than the sum of its proper divisors (46645151886).

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

40136518194 is a wasteful number, since it uses less digits than its factorization.

40136518194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9515594.

The product of its (nonzero) digits is 103680, while the sum is 42.

The spelling of 40136518194 in words is "forty billion, one hundred thirty-six million, five hundred eighteen thousand, one hundred ninety-four".