40402404220210 has 16 divisors (see below), whose sum is σ = 73101137587416. Its totient is φ = 16077226134528.

The previous prime is 40402404220181. The next prime is 40402404220253. The reversal of 40402404220210 is 1202240420404.

It can be written as a sum of positive squares in 4 ways, for example, as 23998114071369 + 16404290148841 = 4898787^2 + 4050221^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10466942169 + ... + 10466946028.

Almost surely, 2^{40402404220210} is an apocalyptic number.

40402404220210 is a deficient number, since it is larger than the sum of its proper divisors (32698733367206).

40402404220210 is a wasteful number, since it uses less digits than its factorization.

40402404220210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20933888397.

The product of its (nonzero) digits is 4096, while the sum is 25.

Adding to 40402404220210 its reverse (1202240420404), we get a palindrome (41604644640614).

The spelling of 40402404220210 in words is "forty trillion, four hundred two billion, four hundred four million, two hundred twenty thousand, two hundred ten".