40894333920 has 336 divisors, whose sum is σ = 158026447152. Its totient is φ = 9913466880.

The previous prime is 40894333919. The next prime is 40894333951. The reversal of 40894333920 is 2933349804.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 1267104 + ... + 1298976.

It is an arithmetic number, because the mean of its divisors is an integer number (470316807).

Almost surely, 2^40894333920 is an apocalyptic number.

40894333920 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 40894333920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79013223576).

40894333920 is an abundant number, since it is smaller than the sum of its proper divisors (117132113232).

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

40894333920 is a wasteful number, since it uses less digits than its factorization.

40894333920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31917 (or 31894 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 45.

The spelling of 40894333920 in words is "forty billion, eight hundred ninety-four million, three hundred thirty-three thousand, nine hundred twenty".