40213343220 has 96 divisors (see below), whose sum is σ = 116315136000. Its totient is φ = 10369994880.

The previous prime is 40213343207. The next prime is 40213343239. The reversal of 40213343220 is 2234331204.

It is a super-2 number, since 2×40213343220² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2780929 + ... + 2795351.

It is an arithmetic number, because the mean of its divisors is an integer number (1211616000).

Almost surely, 2^40213343220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40213343220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58157568000).

40213343220 is an abundant number, since it is smaller than the sum of its proper divisors (76101792780).

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

40213343220 is a wasteful number, since it uses less digits than its factorization.

40213343220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15965 (or 15963 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 24.

Adding to 40213343220 its reverse (2234331204), we get a palindrome (42447674424).

The spelling of 40213343220 in words is "forty billion, two hundred thirteen million, three hundred forty-three thousand, two hundred twenty".