40161172182032 has 160 divisors (see below), whose sum is σ = 86125099962240. Its totient is φ = 17990642647040.

The previous prime is 40161172182029. The next prime is 40161172182107. The reversal of 40161172182032 is 23028127116104.

It is a happy number.

It is a super-2 number, since 2×40161172182032² (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 31 ways as a sum of consecutive naturals, for example, 3038593088 + ... + 3038606304.

It is an arithmetic number, because the mean of its divisors is an integer number (538281874764).

Almost surely, 2^{40161172182032} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40161172182032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43062549981120).

40161172182032 is an abundant number, since it is smaller than the sum of its proper divisors (45963927780208).

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

40161172182032 is a wasteful number, since it uses less digits than its factorization.

40161172182032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14169 (or 14163 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

Adding to 40161172182032 its reverse (23028127116104), we get a palindrome (63189299298136).

The spelling of 40161172182032 in words is "forty trillion, one hundred sixty-one billion, one hundred seventy-two million, one hundred eighty-two thousand, thirty-two".