40381921020220 has 48 divisors (see below), whose sum is σ = 94474414712160. Its totient is φ = 14396101284096.

The previous prime is 40381921020211. The next prime is 40381921020251. The reversal of 40381921020220 is 2202012918304.

It is a happy number.

40381921020220 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2677838682 + ... + 2677853761.

It is an arithmetic number, because the mean of its divisors is an integer number (1968216973170).

Almost surely, 2^{40381921020220} is an apocalyptic number.

It is an amenable number.

40381921020220 is an abundant number, since it is smaller than the sum of its proper divisors (54092493691940).

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

40381921020220 is a wasteful number, since it uses less digits than its factorization.

40381921020220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5355692494 (or 5355692492 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

Adding to 40381921020220 its reverse (2202012918304), we get a palindrome (42583933938524).

The spelling of 40381921020220 in words is "forty trillion, three hundred eighty-one billion, nine hundred twenty-one million, twenty thousand, two hundred twenty".