40685809344 has 56 divisors (see below), whose sum is σ = 107736942768. Its totient is φ = 13550714880.

The previous prime is 40685809319. The next prime is 40685809357. The reversal of 40685809344 is 44390858604.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146604 + ... + 320724.

It is an arithmetic number, because the mean of its divisors is an integer number (1923873978).

Almost surely, 2^40685809344 is an apocalyptic number.

It is an amenable number.

40685809344 is an abundant number, since it is smaller than the sum of its proper divisors (67051133424).

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

40685809344 is a wasteful number, since it uses less digits than its factorization.

40685809344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175353 (or 175343 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 51.

The spelling of 40685809344 in words is "forty billion, six hundred eighty-five million, eight hundred nine thousand, three hundred forty-four".