40849138240 has 28 divisors (see below), whose sum is σ = 97272011196. Its totient is φ = 16339655168.

The previous prime is 40849138219. The next prime is 40849138241. The reversal of 40849138240 is 4283194804.

It can be written as a sum of positive squares in 2 ways, for example, as 24358469184 + 16490669056 = 156072^2 + 128416^2 .

It is not an unprimeable number, because it can be changed into a prime (40849138241) 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, 63826459 + ... + 63827098.

Almost surely, 2^40849138240 is an apocalyptic number.

40849138240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40849138240 is an abundant number, since it is smaller than the sum of its proper divisors (56422872956).

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

40849138240 is a wasteful number, since it uses less digits than its factorization.

40849138240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127653574 (or 127653564 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 43.

The spelling of 40849138240 in words is "forty billion, eight hundred forty-nine million, one hundred thirty-eight thousand, two hundred forty".