20261313005 has 8 divisors (see below), whose sum is σ = 25593237600. Its totient is φ = 15355942416.

The previous prime is 20261313001. The next prime is 20261313013. The reversal of 20261313005 is 50031316202.

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

It is a cyclic number.

It is not a de Polignac number, because 20261313005 - 2² = 20261313001 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20261313001) 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, 106638395 + ... + 106638584.

It is an arithmetic number, because the mean of its divisors is an integer number (3199154700).

Almost surely, 2^20261313005 is an apocalyptic number.

It is an amenable number.

20261313005 is a deficient number, since it is larger than the sum of its proper divisors (5331924595).

20261313005 is a wasteful number, since it uses less digits than its factorization.

20261313005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213277003.

The product of its (nonzero) digits is 1080, while the sum is 23.

Adding to 20261313005 its reverse (50031316202), we get a palindrome (70292629207).

The spelling of 20261313005 in words is "twenty billion, two hundred sixty-one million, three hundred thirteen thousand, five".