40994529408 has 512 divisors, whose sum is σ = 142023168000. Its totient is φ = 11400486912.

The previous prime is 40994529403. The next prime is 40994529431. The reversal of 40994529408 is 80492549904.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (40994529403) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 245476141 + ... + 245476307.

It is an arithmetic number, because the mean of its divisors is an integer number (277389000).

Almost surely, 2^40994529408 is an apocalyptic number.

40994529408 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 40994529408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71011584000).

40994529408 is an abundant number, since it is smaller than the sum of its proper divisors (101028638592).

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

40994529408 is a wasteful number, since it uses less digits than its factorization.

40994529408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409 (or 391 counting only the distinct ones).

The product of its (nonzero) digits is 3732480, while the sum is 54.

The spelling of 40994529408 in words is "forty billion, nine hundred ninety-four million, five hundred twenty-nine thousand, four hundred eight".