40420668208 has 20 divisors (see below), whose sum is σ = 78411635848. Its totient is φ = 20185407360.

The previous prime is 40420668203. The next prime is 40420668221. The reversal of 40420668208 is 80286602404.

It is not an unprimeable number, because it can be changed into a prime (40420668203) 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, 1544541 + ... + 1570492.

Almost surely, 2^40420668208 is an apocalyptic number.

It is an amenable number.

40420668208 is a deficient number, since it is larger than the sum of its proper divisors (37990967640).

40420668208 is a wasteful number, since it uses less digits than its factorization.

40420668208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3115852 (or 3115846 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 40.

The spelling of 40420668208 in words is "forty billion, four hundred twenty million, six hundred sixty-eight thousand, two hundred eight".