40145275172 has 12 divisors (see below), whose sum is σ = 70949818716. Its totient is φ = 19873898400.

The previous prime is 40145275171. The next prime is 40145275201. The reversal of 40145275172 is 27157254104.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 31735284736 + 8409990436 = 178144^2 + 91706^2 .

It is a super-2 number, since 2×40145275172² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40145275171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49684343 + ... + 49685150.

It is an arithmetic number, because the mean of its divisors is an integer number (5912484893).

Almost surely, 2^40145275172 is an apocalyptic number.

It is an amenable number.

40145275172 is a deficient number, since it is larger than the sum of its proper divisors (30804543544).

40145275172 is a wasteful number, since it uses less digits than its factorization.

40145275172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99369598 (or 99369596 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 38.

The spelling of 40145275172 in words is "forty billion, one hundred forty-five million, two hundred seventy-five thousand, one hundred seventy-two".