20005611307 has 4 divisors (see below), whose sum is σ = 21824303256. Its totient is φ = 18186919360.

The previous prime is 20005611293. The next prime is 20005611313. The reversal of 20005611307 is 70311650002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20005611307 - 2¹⁵ = 20005578539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20005611317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 909345958 + ... + 909345979.

It is an arithmetic number, because the mean of its divisors is an integer number (5456075814).

Almost surely, 2^20005611307 is an apocalyptic number.

20005611307 is a deficient number, since it is larger than the sum of its proper divisors (1818691949).

20005611307 is a wasteful number, since it uses less digits than its factorization.

20005611307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1818691948.

The product of its (nonzero) digits is 1260, while the sum is 25.

The spelling of 20005611307 in words is "twenty billion, five million, six hundred eleven thousand, three hundred seven".