40161108672438 has 32 divisors (see below), whose sum is σ = 87543028371456. Its totient is φ = 12208381503648.

The previous prime is 40161108672427. The next prime is 40161108672467. The reversal of 40161108672438 is 83427680116104.

It is a super-2 number, since 2×40161108672438² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3101716470 + ... + 3101729417.

It is an arithmetic number, because the mean of its divisors is an integer number (2735719636608).

Almost surely, 2^{40161108672438} is an apocalyptic number.

40161108672438 is an abundant number, since it is smaller than the sum of its proper divisors (47381919699018).

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

40161108672438 is a wasteful number, since it uses less digits than its factorization.

40161108672438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6203445988.

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 40161108672438 in words is "forty trillion, one hundred sixty-one billion, one hundred eight million, six hundred seventy-two thousand, four hundred thirty-eight".