40905389328 has 80 divisors (see below), whose sum is σ = 110395600896. Its totient is φ = 13036268160.

The previous prime is 40905389321. The next prime is 40905389339. The reversal of 40905389328 is 82398350904.

It is not an unprimeable number, because it can be changed into a prime (40905389321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42100 + ... + 289107.

Almost surely, 2^40905389328 is an apocalyptic number.

40905389328 is a gapful number since it is divisible by the number (48) 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 40905389328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55197800448).

40905389328 is an abundant number, since it is smaller than the sum of its proper divisors (69490211568).

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

40905389328 is a wasteful number, since it uses less digits than its factorization.

40905389328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331332 (or 331326 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 51.

The spelling of 40905389328 in words is "forty billion, nine hundred five million, three hundred eighty-nine thousand, three hundred twenty-eight".