40666434240 has 56 divisors (see below), whose sum is σ = 129115931760. Its totient is φ = 10844382208.

The previous prime is 40666434239. The next prime is 40666434257. The reversal of 40666434240 is 4243466604.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21179475 + ... + 21181394.

Almost surely, 2^40666434240 is an apocalyptic number.

40666434240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40666434240 is an abundant number, since it is smaller than the sum of its proper divisors (88449497520).

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

40666434240 is a wasteful number, since it uses less digits than its factorization.

40666434240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42360889 (or 42360879 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 39.

The spelling of 40666434240 in words is "forty billion, six hundred sixty-six million, four hundred thirty-four thousand, two hundred forty".