20355440410 has 32 divisors (see below), whose sum is σ = 38277453312. Its totient is φ = 7784581440.

The previous prime is 20355440401. The next prime is 20355440423. The reversal of 20355440410 is 1404455302.

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, 369829 + ... + 421288.

It is an arithmetic number, because the mean of its divisors is an integer number (1196170416).

Almost surely, 2^20355440410 is an apocalyptic number.

20355440410 is a deficient number, since it is larger than the sum of its proper divisors (17922012902).

20355440410 is a wasteful number, since it uses less digits than its factorization.

20355440410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 791238.

The product of its (nonzero) digits is 9600, while the sum is 28.

Adding to 20355440410 its reverse (1404455302), we get a palindrome (21759895712).

It can be divided in two parts, 2035 and 5440410, that added together give a palindrome (5442445).

The spelling of 20355440410 in words is "twenty billion, three hundred fifty-five million, four hundred forty thousand, four hundred ten".