40161108543600 has 240 divisors, whose sum is σ = 140358795033600. Its totient is φ = 9735056793600.

The previous prime is 40161108543509. The next prime is 40161108543601. The reversal of 40161108543600 is 634580116104.

It is a tau number, because it is divible by the number of its divisors (240).

It is a super-2 number, since 2×40161108543600² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40161108543601) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 137120512 + ... + 137413088.

It is an arithmetic number, because the mean of its divisors is an integer number (584828312640).

Almost surely, 2^{40161108543600} is an apocalyptic number.

40161108543600 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40161108543600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70179397516800).

40161108543600 is an abundant number, since it is smaller than the sum of its proper divisors (100197686490000).

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

40161108543600 is a wasteful number, since it uses less digits than its factorization.

40161108543600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303008 (or 302997 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 39.

Adding to 40161108543600 its reverse (634580116104), we get a palindrome (40795688659704).

The spelling of 40161108543600 in words is "forty trillion, one hundred sixty-one billion, one hundred eight million, five hundred forty-three thousand, six hundred".