40168870003540 has 24 divisors (see below), whose sum is σ = 84463753336200. Its totient is φ = 16046762034048.

The previous prime is 40168870003501. The next prime is 40168870003553. The reversal of 40168870003540 is 4530007886104.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1884480999696 + 38284389003844 = 1372764^2 + 6187438^2 .

It is a super-2 number, since 2×40168870003540² (a number of 28 digits) contains 22 as substring.

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, 1299107115 + ... + 1299138034.

It is an arithmetic number, because the mean of its divisors is an integer number (3519323055675).

Almost surely, 2^{40168870003540} is an apocalyptic number.

It is an amenable number.

40168870003540 is an abundant number, since it is smaller than the sum of its proper divisors (44294883332660).

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

40168870003540 is a wasteful number, since it uses less digits than its factorization.

40168870003540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2598245931 (or 2598245929 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

Adding to 40168870003540 its reverse (4530007886104), we get a palindrome (44698877889644).

The spelling of 40168870003540 in words is "forty trillion, one hundred sixty-eight billion, eight hundred seventy million, three thousand, five hundred forty".