40108171531838 has 16 divisors (see below), whose sum is σ = 62232626626560. Its totient is φ = 19366663726200.

The previous prime is 40108171531819. The next prime is 40108171531871. The reversal of 40108171531838 is 83813517180104.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 675237518 + ... + 675296913.

It is an arithmetic number, because the mean of its divisors is an integer number (3889539164160).

Almost surely, 2^{40108171531838} is an apocalyptic number.

40108171531838 is a deficient number, since it is larger than the sum of its proper divisors (22124455094722).

40108171531838 is a wasteful number, since it uses less digits than its factorization.

40108171531838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1350534943.

The product of its (nonzero) digits is 645120, while the sum is 50.

The spelling of 40108171531838 in words is "forty trillion, one hundred eight billion, one hundred seventy-one million, five hundred thirty-one thousand, eight hundred thirty-eight".