20013345291 has 8 divisors (see below), whose sum is σ = 26687688400. Its totient is φ = 13340616192.

The previous prime is 20013345241. The next prime is 20013345311. The reversal of 20013345291 is 19254331002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20013345291 - 2¹⁵ = 20013312523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20013345241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 374266 + ... + 424383.

It is an arithmetic number, because the mean of its divisors is an integer number (3335961050).

Almost surely, 2^20013345291 is an apocalyptic number.

20013345291 is a deficient number, since it is larger than the sum of its proper divisors (6674343109).

20013345291 is an equidigital number, since it uses as much as digits as its factorization.

20013345291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807005.

The product of its (nonzero) digits is 6480, while the sum is 30.

Adding to 20013345291 its reverse (19254331002), we get a palindrome (39267676293).

The spelling of 20013345291 in words is "twenty billion, thirteen million, three hundred forty-five thousand, two hundred ninety-one".