40208993888 has 72 divisors (see below), whose sum is σ = 94331921544. Its totient is φ = 16812096000.

The previous prime is 40208993849. The next prime is 40208993893. The reversal of 40208993888 is 88839980204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 248438 + ... + 377013.

It is an arithmetic number, because the mean of its divisors is an integer number (1310165577).

Almost surely, 2^40208993888 is an apocalyptic number.

It is an amenable number.

40208993888 is an abundant number, since it is smaller than the sum of its proper divisors (54122927656).

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

40208993888 is a wasteful number, since it uses less digits than its factorization.

40208993888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625516 (or 625501 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 59.

The spelling of 40208993888 in words is "forty billion, two hundred eight million, nine hundred ninety-three thousand, eight hundred eighty-eight".