40694318840 has 128 divisors (see below), whose sum is σ = 106360473600. Its totient is φ = 13724605440.

The previous prime is 40694318779. The next prime is 40694318881. The reversal of 40694318840 is 4881349604.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 6212447 + ... + 6218993.

It is an arithmetic number, because the mean of its divisors is an integer number (830941200).

Almost surely, 2^40694318840 is an apocalyptic number.

40694318840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40694318840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53180236800).

40694318840 is an abundant number, since it is smaller than the sum of its proper divisors (65666154760).

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

40694318840 is a wasteful number, since it uses less digits than its factorization.

40694318840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6925 (or 6921 counting only the distinct ones).

The product of its (nonzero) digits is 663552, while the sum is 47.

The spelling of 40694318840 in words is "forty billion, six hundred ninety-four million, three hundred eighteen thousand, eight hundred forty".