20130213345 has 64 divisors (see below), whose sum is σ = 35630751744. Its totient is φ = 9623646720.

The previous prime is 20130213329. The next prime is 20130213379. The reversal of 20130213345 is 54331203102.

It is not a de Polignac number, because 20130213345 - 2⁴ = 20130213329 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3934509 + ... + 3939621.

It is an arithmetic number, because the mean of its divisors is an integer number (556730496).

Almost surely, 2^20130213345 is an apocalyptic number.

It is an amenable number.

20130213345 is a deficient number, since it is larger than the sum of its proper divisors (15500538399).

20130213345 is a wasteful number, since it uses less digits than its factorization.

20130213345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5462.

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 20130213345 its reverse (54331203102), we get a palindrome (74461416447).

The spelling of 20130213345 in words is "twenty billion, one hundred thirty million, two hundred thirteen thousand, three hundred forty-five".