40208888864 has 12 divisors (see below), whose sum is σ = 79161250014. Its totient is φ = 20104444416.

The previous prime is 40208888851. The next prime is 40208888891. The reversal of 40208888864 is 46888880204.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 33455336464 + 6753552400 = 182908^2 + 82180^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 628263857 + ... + 628263920.

Almost surely, 2^40208888864 is an apocalyptic number.

It is an amenable number.

40208888864 is a deficient number, since it is larger than the sum of its proper divisors (38952361150).

40208888864 is a wasteful number, since it uses less digits than its factorization.

40208888864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256527787 (or 1256527779 counting only the distinct ones).

The product of its (nonzero) digits is 6291456, while the sum is 56.

The spelling of 40208888864 in words is "forty billion, two hundred eight million, eight hundred eighty-eight thousand, eight hundred sixty-four".