20345313004 has 12 divisors (see below), whose sum is σ = 35605929184. Its totient is φ = 10172190384.

The previous prime is 20345312963. The next prime is 20345313019. The reversal of 20345313004 is 40031354302.

It is a super-2 number, since 2×20345313004² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20345313004.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6852 + ... + 201835.

Almost surely, 2^20345313004 is an apocalyptic number.

It is an amenable number.

20345313004 is a deficient number, since it is larger than the sum of its proper divisors (15260616180).

20345313004 is a wasteful number, since it uses less digits than its factorization.

20345313004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233064 (or 233062 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 25.

Adding to 20345313004 its reverse (40031354302), we get a palindrome (60376667306).

The spelling of 20345313004 in words is "twenty billion, three hundred forty-five million, three hundred thirteen thousand, four".