40161108543578 has 32 divisors (see below), whose sum is σ = 68600344988160. Its totient is φ = 17467680384000.

The previous prime is 40161108543509. The next prime is 40161108543601. The reversal of 40161108543578 is 87534580116104.

It is a super-2 number, since 2×40161108543578² (a number of 28 digits) contains 22 as substring.

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, 330766583 + ... + 330887978.

It is an arithmetic number, because the mean of its divisors is an integer number (2143760780880).

Almost surely, 2^{40161108543578} is an apocalyptic number.

40161108543578 is a deficient number, since it is larger than the sum of its proper divisors (28439236444582).

40161108543578 is a wasteful number, since it uses less digits than its factorization.

40161108543578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661654694.

The product of its (nonzero) digits is 3225600, while the sum is 53.

The spelling of 40161108543578 in words is "forty trillion, one hundred sixty-one billion, one hundred eight million, five hundred forty-three thousand, five hundred seventy-eight".