40320321210 has 128 divisors (see below), whose sum is σ = 115915403520. Its totient is φ = 9914400000.

The previous prime is 40320321161. The next prime is 40320321257. The reversal of 40320321210 is 1212302304.

40320321210 is a `hidden beast` number, since 4 + 0 + 320 + 321 + 21 + 0 = 666.

40320321210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3578085 + ... + 3589335.

It is an arithmetic number, because the mean of its divisors is an integer number (905589090).

Almost surely, 2^40320321210 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40320321210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57957701760).

40320321210 is an abundant number, since it is smaller than the sum of its proper divisors (75595082310).

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

40320321210 is a wasteful number, since it uses less digits than its factorization.

40320321210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12301 (or 12295 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 40320321210 its reverse (1212302304), we get a palindrome (41532623514).

The spelling of 40320321210 in words is "forty billion, three hundred twenty million, three hundred twenty-one thousand, two hundred ten".