40121868260 has 12 divisors (see below), whose sum is σ = 84255923388. Its totient is φ = 16048747296.

The previous prime is 40121868247. The next prime is 40121868323. The reversal of 40121868260 is 6286812104.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 22965583936 + 17156284324 = 151544^2 + 130982^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1003046687 + ... + 1003046726.

It is an arithmetic number, because the mean of its divisors is an integer number (7021326949).

Almost surely, 2^40121868260 is an apocalyptic number.

It is an amenable number.

40121868260 is an abundant number, since it is smaller than the sum of its proper divisors (44134055128).

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

40121868260 is a wasteful number, since it uses less digits than its factorization.

40121868260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2006093422 (or 2006093420 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The spelling of 40121868260 in words is "forty billion, one hundred twenty-one million, eight hundred sixty-eight thousand, two hundred sixty".