40140345040 has 40 divisors (see below), whose sum is σ = 96336834048. Its totient is φ = 15538197120.

The previous prime is 40140345017. The next prime is 40140345097. The reversal of 40140345040 is 4054304104.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×40140345040² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40140344996 and 40140345014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8090332 + ... + 8095291.

Almost surely, 2^40140345040 is an apocalyptic number.

40140345040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40140345040 is an abundant number, since it is smaller than the sum of its proper divisors (56196489008).

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

40140345040 is a wasteful number, since it uses less digits than its factorization.

40140345040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16185667 (or 16185661 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 40140345040 its reverse (4054304104), we get a palindrome (44194649144).

The spelling of 40140345040 in words is "forty billion, one hundred forty million, three hundred forty-five thousand, forty".