20130402345 has 16 divisors (see below), whose sum is σ = 33319287360. Its totient is φ = 10366000064.

The previous prime is 20130402293. The next prime is 20130402353. The reversal of 20130402345 is 54320403102.

It is a cyclic number.

It is not a de Polignac number, because 20130402345 - 2⁹ = 20130401833 is a prime.

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, 23137959 + ... + 23138828.

It is an arithmetic number, because the mean of its divisors is an integer number (2082455460).

Almost surely, 2^20130402345 is an apocalyptic number.

It is an amenable number.

20130402345 is a deficient number, since it is larger than the sum of its proper divisors (13188885015).

20130402345 is a wasteful number, since it uses less digits than its factorization.

20130402345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46276824.

The product of its (nonzero) digits is 2880, while the sum is 24.

Adding to 20130402345 its reverse (54320403102), we get a palindrome (74450805447).

The spelling of 20130402345 in words is "twenty billion, one hundred thirty million, four hundred two thousand, three hundred forty-five".