20434320210 has 16 divisors (see below), whose sum is σ = 49042368576. Its totient is φ = 5449152048.

The previous prime is 20434320149. The next prime is 20434320227. The reversal of 20434320210 is 1202343402.

It is a super-2 number, since 2×20434320210² (a number of 21 digits) contains 22 as substring.

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, 340571974 + ... + 340572033.

It is an arithmetic number, because the mean of its divisors is an integer number (3065148036).

Almost surely, 2^20434320210 is an apocalyptic number.

20434320210 is an abundant number, since it is smaller than the sum of its proper divisors (28608048366).

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

20434320210 is a wasteful number, since it uses less digits than its factorization.

20434320210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681144017.

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 20434320210 its reverse (1202343402), we get a palindrome (21636663612).

The spelling of 20434320210 in words is "twenty billion, four hundred thirty-four million, three hundred twenty thousand, two hundred ten".